Ririka-chan!! She's a lively girl who looks great in a red blazer!! She's 149cm tall!! She's incredibly small!! What's more, she seems to be a member of a certain underground idol group!! Of course, just like other groups, that group has strict rules that prohibit romance and playing around with men! They'll fire you immediately! But Ririka-chan seems to be having fun all over the place. Such a cute girl...