Sugimoto's appearance makes Miyata jealous and affects the relationship between him and Iwanaga.

Miyata's girlfriend turns down his marriage proposal, while Iwanaga actively pursues a reunion between him and Miyata.

Miyata goes to Iwanaga's hometown, and the two of them sincerely ask Iwanaga's mother for her blessing towards their relationship.

Miyata accepts Iwanaga's request to go for a drink, but he didn't expect that he would wake up in Iwanaga's apartment.

Iwanaga is appreciative of Miyata's visit and concern, and the pair go on a date, with Iwanaga continuing his pursuit of a relationship with his former love.

Because of a sudden incident, Miyata and Iwanaga spend the night at a hot spring hotel, where their relationship takes a new turn.