Chizuru is very happy that Ryu's older brother Toru has come home earlier than planned! But when she finds out that Toru is engaged, Chizu is completely taken aback! Although her friends Sawako and Ayane suspect that Chizu must be deeply shocked, they can't do anything as long as she doesn't want to talk about it. However, it is the quiet Ryu who manages to get Chizu to open up...