Kogetsu/Gen'yō

"So the tip changes shape. That's why it kept getting me when I thought I dodged."

- Yūma Kuga

Gen'yō is an Optional Trigger exclusive to Kogetsu, including its spear variant. An attack carried out using this Trigger takes the name of Gen'yō Kogetsu.

Appearance
Gen'yō has no physical manifestation outside of its effect on Kogetsu, whose blade it enables the user to morph at will.

Overview
The origins of this Trigger are unknown. Due to its function, it cannot have been created before Kogetsu.

Abilities
Gen'yō allows the user to freely manipulate the shape of Kogetsu's blade. It is often used as a counter-countermeasure as the user launches an attack with Kogetsu: if the target attempts to dodge, the blade can be morphed in order to anticipate or follow their movement, or it can be made to go around any defense they interpose. This latter application is especially useful against Triggers that adversely affect weapons they come in contact with. Particularly skilled users can synchronize the activation of Gen'yō so precisely that the opponent might fail to see the blade morph and to understand how they have been hit.

Users
See also: Gen'yō Users

There are only two known users of Gen'yō: Yōsuke Yoneya through his spear and Yūta Miura in conjunction with a standard Kogetsu. The former is particularly remarkable for seamlessly integrating the Trigger in his combat style. Members of branches who do not participate in Rank Wars are excluded from the count.

Trivia

 * The name of this Trigger was revealed 45 chapters after it was first shown in use.