I’m Aware That I’m a Burden, but I’m Not Allowed to Leave the Party, so I Tried to Disappear by Pretending to Jump off Into the Abyss, but I Really Fell ~I Become Deadly Strong in the Abyss While the Girls in the Party Are Sick With Despair~

Native title: お荷物を自覚してるのにパーティ脱退が許されないから、奈落の底に飛び降りるフリで姿を消そうとして本当に落ちた　～絶望で病んだパーティの少女たちをよそに、僕は奈落で死ぬほど強くなる～