Tonari no Shugoshin
となりの守護神
A girl named Rio, who has been taking care of her brother since her parents' death, refuses to depend on anyone else. She purchases a collectible card depicting Sir Lancelot, intending to sell it online for profit. Each night, she dreams of meeting Lancelot. When a boy named Yuuki-kun invites her out and almost kisses her, Lancelot unexpectedly appears and declares he is there to rescue her.