Permeation

Permeation is an ability that allows the user to pass through objects. When this ability is used, the user may pass through walls, but will tire them when they do so.

It was the ability of Shichino.

Usage
How this ability is activated is unknown. When the ability is used, where the user and the object touch is a bright green light as the user phases through the object. The user seems to experience some resistance as they pass through, so the ability does not make the object completely intangible.

For each object the user permeates through, they will grow more tired. If the ability is used too many times without opportunity to rest, the user may collapse from exhaustion.

A possible reason as to why the user does not permeate through everything when using the ability is that the user makes a target object permeable, rather than the ability causing the user to be permeable.

Shichino
TBA

Yū Otosaka
TBA