Sensha Isu: TANK CHAIR

Shizuka accepts a high-risk assassination mission, but the actual killing is done by her brother, Nagi, a powerful assassin who is in a coma after being shot while shielding her. Confined to a wheelchair, he remains unaware of his actions. Shizuka discovers that exposing him to lethal threats is the way to awaken him. She embarks on a mission involving deadly confrontations to aid his recovery.