School Trip Rhapsody (4)

Summary
Bossun and Himeko help each bathe in the family mixed bathroom. Before they do that, Chiaki and Saaya asks Himeko (Bossun) to take a bath with them. When Bossun (Himeko) says that he wants to bathe with Himeko and see her naked, Saaya run off angry with Chiaki following her. Things are going well in the school trip for Bossun and Himeko.