QQスイーパー (Series) favorite_border

[DeepL Translation - needs review] Volume 1 Introduction: Kutaro Horikita is a genius cleaning professional. One day, a girl named Fumi suddenly appears in his cherished room in the school building. She is a slightly mysterious transfer student who has no relatives and dreams of becoming a rich man...! A slightly awkward, but very skilled cleaner boy and a A love fantasy between a rather unapproachable, but skilled, janitorial boy and a girl with a "reason" is about to begin!

(Translator: DeepL)