Ever since he met Rika when they were children, he became great friends with her. Until that incident that Rika had, Naoto wants to spend some more time with Rika and wanted to have a nice relationship with her, until Asmo came along and started trying to kidnap her.
Naoto has been a friend of Rika's since childhood. He wishes to spend more time with her and develop a good relationship, but this plan was complicated by Asmo's attempt to kidnap her.