Episode 5

S1 E5: Yuta visits his hometown after a long absence. He has been reluctant to go home because he thinks his stepfather Kazuo is too blunt and direct. When he returns to Tokyo and calls on Professor Hanamoto, Hagumi gives him a 'Welcome home' greeting with a smile on her face. The group of friends wins a lottery prize from the tickets Shinobu gave them as Christmas gifts. They decide to use the money for a trip to Atami Hot Spring led by professor Hanamoto.