I'm looking for this anime (I think it was chinese) there was a scene in it where a group of friends and siblings were playing a popular game where they transferred ?caviar? Some sort of tiny spherical food into another's mouth with their mouth and whoever's dropped/swallowed it them they lost. Anyway i think it was two siblings(I think maybe they were step siblings) did it and were really feeling it, sort of started making out. Anybody know the anime?