First Master - S1.E22

Choco is puarsaded by Tamami to be a part of her club's maid café for Haruma's collage festival. As Haruma is working he gets a call from his cousin who is in town, and she asks to visit him. When Choco approached Haruma and his cousin he said that Choco is not his little sister. Choco begins too question who she is, and her existence is then put into jeapordy.