WATASHI NO HEYA NI NINGEN KYOUFUSHOU NO HIKIKOMORI KYUUKETSUKI GA IRU

Mimiko, a high school girl living alone, returns home from her part-time job to find a vampire collapsed in her room. The red-haired vampire, named Glenn, claims to have 'Anthropophobia' (fear of humans)—yet for some reason, he seems perfectly fine around Mimiko.

While Mimiko wants this untrustworthy intruder out as soon as possible, Glenn is desperate to return from 'this cramped, run-down Japanese apartment swarming with humans' to his 'magnificent castle surrounded by European nature'... but he has no way home.

Out of sheer necessity, until he finds a way back, the eccentric high schooler and the out-of-touch vampire begin an unwilling life together under the same roof!!