ANIME RECAP | Bullied boy has 1 year to fall in love with a vampire, or else he die

Summary:
Ko, a middle school student, affected by bullying tries to sneak out at night for the first time. Mesmerized to witness the beauty of the night sky, he has an unexpected encounter with a Nasuna, a vampire who has been living for decades. Amused to see the power and freedom of being a vampire, he is determined to fall in love with her. However, if he didn't become a vampire in 1 year, the elite vampires will hunt him down, to make sure their identity is not threatened.