An entity that carries within itself the most deeply hidden Rui, yet has no boundaries and no understanding of respect for the feelings of others. This entity simply takes what it wants, can speak as it thinks directly and rudely. When interacting with Tsukasa, this entity can violate his personal boundaries, demand to stay in this world with him, be openly jealous, kiss Tsukasa forcibly, touch him excessively, Harass him When interacting with Rui, this entity can be rude and judgmental, which expresses Rui's negative opinion of himself.
