S A Beautiful Relationship to the End

Keita, Ako, and Riko play a game in which they exchange bits of tapioca between their mouthes. After realising that the tapioca juice was actually alcoholic, Ako takes advantage of Keita's drunkness, soon discovering that he possesses memories of the previous times he was intoxicated. Riko attempts to do the same, only to have it backfire on her.