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    The most popular, all-purpose blade: Kogetsu.

    –Shiori Usami, in Arashiyama Squad 2.[1]

    Kogetsu (()(げつ) Lit. Arc Moon ?) is an Attacker Trigger.

    Appearance[edit source]

    Kogetsu is a slightly curved katana with a luminous yellow blade and no guard. Its gray handle, which is long enough to accommodate two hands, is composed of a series of rectangular tassels and a wider portion roughly one inch long between the grip and the blade. Its scabbard is plain and generally worn with the cutting-edge down.

    Yūko Kumagai had her Kogetsu modified to include a cross-shaped tsuba,[3] Kirie Konami to shorten the blade.[4] Yōsuke Yoneya customized his into a Sankaku Yari,[5] a gray spear measuring roughly six feet in length with tassels much like the regular model's making its shaft easier to grip at the butt and right before the tip, two-fifths of which are hollowed out. Kō Murakami had the color of his Kogetsu changed to black before round seven of the most recent season of Rank Wars.[6]

    Overview[edit source]

    Kogetsu was the first Attacker Trigger to be developed.[7] The members of Old Border appeared to be already equipped with it at the time of the First Large-Scale Invasion.[8]

    Abilities[edit source]

    Shūji Miwa cleaves through Yūma Kuga's Shield.

    Kogetsu is considered an all-purpose Attacker Trigger as well as the most balanced one, boasting both high offensive power and durability.[1] It is capable of effortlessly slicing through matter not made out of Trion, including metal poles[9] and concrete walls several dozens of centimeters thick,[10] and trion bodies alike.[11] A single swing can crack a Scorpion[12] or even break a transformed one,[13][14] and Aftokrator's armored capes offer no protection against it.[15][16] Although a focused Shield is generally a viable defense,[17] it can be cracked and broken within a short time frame with continued pressure and possibly a high level of skill.[18] However, the barriers generated by an Idra can withstand a high-speed slash.[19] Kogetsu itself is very durable, and it has yet to be seen so much as chipping after repeatedly clashing against itself[20][21][22][23] or any other blade;[24][25][26][27] thus far, only Ikoma Senkū has succeeded at cleaving through both a deactivated Kogetsu and its scabbard.[28]

    Unlike Scorpion and Raygust, Kogetsu cannot shapeshift without its Exclusive Optional Trigger Gen'yō.[29] Senkū, a second dedicated Optional Trigger, can briefly extend its blade for vastly increased reach[30] and cutting power.[31] Due to these Triggers being exclusives, they must be equipped to the same side as Kogetsu, however they can be activated while two Triggers are already in use.[32] Kogetsu itself can be turned off in order to use other Triggers without the need to dispel it or put it back in its scabbard, but it will lose its edge completely until selected again. To prevent it from becoming a burden, one may decide to destroy the blade and the sheath and conjure them anew when needed, but the process will consume trion.[33] A new blade can be materialized after the previous one is lost[34] or becomes unfit for use[35] and made to appear inside the pre-existing scabbard.[34]

    One of the few downsides to Kogetsu is its weight.[1] The majority of users find themselves off-balance when wielding it with only one hand,[36] and underperform as a result of their swordplay getting slower.[17] However, there are also particularly capable agents who prefer to brandish it with only one hand,[37][38][39] presumably suggesting that skill can offset the Trigger's weight. A very circumstantial drawback of Kogetsu is that it has a luminescent blade, which can be easily spotted in the darkness;[40] however, the glow can be removed by setting its color to black[6] with the help of an Engineer.[41] Since it interferes with Lead Bullet,[42] Kogetsu is in all likelihood a physical object.[43]

    Users[edit source]

    See also: Kogetsu Users

    There are 28 known agents with at least one Kogetsu chip in their Trigger Set.[44] The number rises to 29 if Yōsuke's spear, which has a slightly different name,[5] is classified as a customization and not a separate Trigger. No. 1 Attacker and solo combatant Kei Tachikawa is an especially noteworthy user,[45] as is his teacher, Director Masafumi Shinoda, hailed as the strongest normal Trigger user at HQ.[46] Kogetsu is also used by an unknown number of trainees and agents who do not take part in rank wars.[47]

    Particularly notable among former users are Kirie Konami, who surpassed even Tachikawa in points before withdrawing from rank wars,[4] Yūichi Jin, previously the no. 2 Attacker and solo combatant,[48] and Raizō Terashima, a high-ranking Attacker who became an Engineer.[49]

    Trivia[edit source]

    • The author confessed that the sudden disappearance of a Kogetsu is due to him forgetting to draw it.[50]
    • The concept of a Black Kogetsu was teased by the author in the official databook[41] prior to its appearance in the series.[51]

    References[edit source]

    1. 1.0 1.1 1.2 1.3 World Trigger Manga and Anime Vol. 4 Chapter 26 (p. 5) and Episode 14.
    2. World Trigger MangaBorder Briefing File (p. 212)
    3. Daisuke Ashihara: Q: Kumagai's Kogetsu has a guard, can the design of any part that isn't the blade be freely changed?
      A: Consult with the Engineers, and it can be freely changed to an extent. Kumagai blocks with her sword a lot, so a guard was attached to protect her hands.
      Source: Border Briefing File, Page 305, Question 153
    4. 4.0 4.1 Daisuke Ashihara: Q: Konami is the No. 3 Attacker, does this mean she shows up in the Solo Rank Wars? And in that case what Triggers does she use?
      A: Studying came first for Konami up until the end of her middle school years so she didn’t do any Solo Rank Wars then, and only participated in the period from her middle school graduation and part way through her first year of high school. Back then, in that period, Jin started using Fūjin and Tachikawa had kind of lost his motivation, so Konami sharpened her blades against those like Kazama to reach all the way to No. 1 Attacker. After that, along with Tamakoma’s separation, she took a step back from Rank Wars, but her solo points have only been surpassed by Tachikawa and Kazama so she’s still No. 3 Attacker. Her Triggers at the time were dual-wielded Kogetsu (fairly short).
      Source: Volume 20, Question Corner 15
    5. 5.0 5.1 World Trigger MangaBorder Briefing File (p. 81)
    6. 6.0 6.1 World Trigger Manga and Anime Vol. 19 Chapter 169 (p. 9) and Episode 89.
    7. World Trigger Manga and Anime Vol. 4 Chapter 27 (p. 9) and Episode 14.
    8. World Trigger Manga and Anime Vol. 1 Chapter 1 (p. 7) and Episode 1.
    9. World Trigger Manga and Anime Vol. 11 Chapter 97 (p. 5) and Episode 44.
    10. World Trigger Manga and Anime Vol. 20 Chapter 175 (p. 5) and Episode 91.
    11. World Trigger Manga and Anime Vol. 22 Chapter 189 (p. 12) and Episode 97.
    12. World Trigger Manga and Anime Vol. 11 Chapter 90 (p. 5) and Episode 41.
    13. World Trigger Manga and Anime Vol. 12 Chapter 98 (p. 10) and Episode 45.
    14. World Trigger Manga and Anime Vol. 13 Chapter 114 (p. 8) and Episode 69.
    15. World Trigger Manga and Anime Vol. 9 Chapter 76 (p. 8) and Episode 34.
    16. World Trigger Manga and Anime Vol. 9 Chapter 76 (p. 10) and Episode 34.
    17. 17.0 17.1 World Trigger Manga and Anime Vol. 12 Chapter 99 (p. 7) and Episode 45.
    18. World Trigger Manga and Anime Vol. 12 Chapter 99 (p. 6) and Episode 45.
    19. World Trigger Manga and Anime Vol. 15 Chapter 129 (p. 10) and Episode 76.
    20. World Trigger Manga and Anime Vol. 11 Chapter 97 (p. 2-5) and Episode 44.
    21. World Trigger Manga and Anime Vol. 12 Chapter 98 (p. 9) and Episode 45.
    22. World Trigger Manga and Anime Vol. 12 Chapter 99 (p. 10) and Episode 45.
    23. World Trigger Manga and Anime Vol. 18 Chapter 153 (p. 1-8) and Episode 83.
    24. World Trigger Manga and Anime Vol. 15 Chapter 129 (p. 4-5) and Episode 75.
    25. World Trigger Manga and Anime Vol. 15 Chapter 130 (p. 8) and Episode 76.
    26. World Trigger Manga and Anime Vol. 15 Chapter 133 (p. 13) and Episode 77.
    27. World Trigger Manga and Anime Vol. 18 Chapter 153 (p. 11) and Episode 83.
    28. World Trigger Manga and Anime Vol. 18 Chapter 157 (p. 10) and Episode 84.
    29. World Trigger MangaBorder Briefing File (p. 154)
    30. World Trigger Manga and Anime Vol. 4 Chapter 26 (p. 5-6) and Episode 14.
    31. World Trigger Manga and Anime Vol. 7 Chapter 57 (p. 11) and Episode 26.
    32. Daisuke Ashihara: Q: Does "exclusive optionals" not count in the only two triggers at a time limit?
      A: They don't. Exclusive Optionals, like Kogetsu's exclusive "Senkū", are equipped on the same side of the slots as Kogetsu, and only switched ON when in use (the trion consumed is only what the exclusive option used). Dual-wielding Kogetsu + (Senkū x 2) for a "Double Senkū Kogetsu" is also possible.
      Source: Border Briefing File, Page 307, Question 167
    33. Daisuke Ashihara: Q: During the battle versus Ranbanein, Okudera used Full Guard; does that mean you can use other Triggers if you just put Kogetsu in a sheath without deactivating it?
      A: Even without putting it in a sheath you can turn the Kogetsu off, but the sharpness will become zero. You won’t be able to use it and you can’t deactivate it either, so it’s a big hindrance. Deactivating Kogetsu and then remaking one later when you need it again will mean it’s not a hindrance, but it will use up trion. It is the same with gun-type Triggers.
      Source: Volume 10, Question Corner 9
    34. 34.0 34.1 World Trigger Manga and Anime Vol. 13 Chapter 114 (p. 17-18) and Episode 69.
    35. World Trigger Manga and Anime Vol. 18 Chapter 157 (p. 13) and Episode 85.
    36. World Trigger Manga and Anime Vol. 16 Chapter 139 (p. 7) and Episode 78.
    37. World Trigger Manga and Anime Vol. 2 Chapter 15 (p. 4) and Episode 8.
    38. World Trigger Manga and Anime Vol. 11 Chapter 90 (p. 2-3) and Episode 41.
    39. World Trigger Manga and Anime Vol. 13 Chapter 114 (p. 2-3) and Episode 69.
    40. World Trigger Manga and Anime Vol. 19 Chapter 168 (p. 21) and Episode 89.
    41. 41.0 41.1 Daisuke Ashihara: Q: The Trion Body's uniform or hairstyle can be set as anything, can a trigger (weapon)'s color or ornaments be set?
      A: If the request is given to an Engineer, it can be. A black Kogetsu or something seems like it'd be pretty cool.
      Source: Border Briefing File, Page 310, Question 195
    42. World Trigger Manga and Anime Vol. 18 Chapter 157 (p. 12) and Episode 85.
    43. Daisuke Ashihara: Q: Can Escudo defend from Lead Bullets?
      A: Escudo converts Trion into a material form, so it can. It is treated the same as blocking Lead Bullets with walls or buildings.
      Source: Volume 18, Question Corner 11
    44. World Trigger MangaBorder Briefing File
    45. World Trigger Manga and Anime Vol. 18 Chapter 160 (p. 7) and Episode 85.
    46. World Trigger Manga and Anime Vol. 4 Chapter 31 (p. 11) and Episode 16.
    47. Daisuke Ashihara: Q: Are there any branches besides Tamakoma and Suzunari?
      A: Border has 6 branches: Tamakoma, Suzunari, Wataayu (綿(わた)(あゆ) ?), Yumite District ((ゆみ)()(まち) ?), Hayanuma ((はや)(ぬま) ?), and Kuma (()() ?). Its personnel are mostly those who prioritise work or school and don’t aim for A-Rank (they do not participate in the twice a week Rank Wars). The branches are placed on the outer edge of the Forbidden Zone. Other than Tamakoma, the branches function as a point of contact for local residents.
      Source: Volume 18, Question Corner 11
    48. World Trigger Manga and Anime Vol. 4 Chapter 27 (p. 10) and Episode 14.
    49. Daisuke Ashihara: Q: Please tell us when Raygust was developed as well as the story behind its development.
      A: Raizō Terashima (18), a top class Kogetsu wielder at the time, got pissed off at the enhancing and popularity of bullet triggers and transferred to Engineer, where he made Raygust as an anti-bullet trigger blade with Shield and Scorpion as the base. This was when Terashima gained weight.
      Source: Border Briefing File, Page 305, Question 155
    50. Daisuke Ashihara: Q: Can you not put away Kogetsu only while it's selected, or the whole time the Trigger is on?
      A: Once the Kogetsu is selected, it is always out. It disappears in the art sometimes, but that's just me forgetting to draw it.
      Source: Volume 7, Question Corner 5
    51. World Trigger Manga and Anime Vol. 19 Chapter 167 (p. 19) and Episode 88.

    Navigation[edit source]

    Border Triggers
    Basic Equipment Bail OutRadarTrion Body
    Gunner AsteroidCobraGimletHornetHoundMeteorSalamanderTomahawkViper
    Sniper EgretIbisLightning
    Trap Switchbox
    Prototypes ConnectorDummy BeaconFull ArmsGeistIdatenMakōTeleporterTimer
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