Ateuma Chara no Kuse shite, Super Darling Ouji ni Chouai sareteimasu.
English title: The Perfect Prince Loves Me, the Side Character?!
Japanese title: 当て馬キャラのくせして、 スパダリ王子に寵愛されています。
Type: ONA
Episodes: 8
Source: Manga
Genres: Boys Love, Fantasy, Erotica
Studios: Studio Hokiboshi
Producers: Studio Mausu, Suiseisha
Duration: 7 min per ep
Rating: Rx - Hentai

Side Character — Unimportant. Constantly getting in the way of the main characters' love story.

After finding himself reincarnated into the world of a novel, Loneal goes to great lengths to steer clear of Prince Alec, the hero, to avoid disrupting the main storyline between Alec and the heroine, Lily. However, to Loneal's great surprise, the prince becomes infatuated with...him?!

"A charming physique, such as yours, more than makes up for your lack of experience."

Before he knows it, he finds himself melting into the prince's arms... Why is everything so different from the novel?!

(Source: Official site)