The flu Futaro had caught during the school camp has sent him to hospital, where he discovers his inspection doctor is someone whom he has met before. The five quintuplets all visit the ill Futaro, with Itsuki bringing a luck charm hoping for a speedy recovery. Futaro is then reminded that the girl he met six years ago in the Kyoto trip also bought similar looking ones, which makes him begin to suspect that the young girl he met in Kyoto is one of the five quintuplets. The other day, when Futaro arrives for a tutoring session, he encounters a towel-clad quintuplet. ...