Chitose Is In The Ramune Bottle, Vol. 4 (manga)

"'I'm...going to reach for the moon.' When Kenta Yamazaki sets out to face the otaku group at the source of his trauma, he doesn't expect to be hit with a torrent of verbal abuse! No need to worry, however--the king, Saku Chitose, has got his back, and with the help of his quick wit and charm, Kenta feels he can finally shut the book on his old life. Things are far from over for Saku though, as Yuzuki aprroaches him with a shocking request..."--