Even after Riya regains consciousness, Atsushi feels that he should continue to look after Riya, and he gives Riya a key to his apartment. Little does Atsushi know that he gave the key to Riya's other half.
As soon as Riya regains awareness, Atsushi decides to look after her and hands over a key to his apartment. However, Atsushi is unaware that he has given this key to Riya's duplicate.