JK wo Atta... to, Omotta desho?

One day, Kurose, an office worker, comes across a lost high school girl and feels he can't just leave her alone, so he brings her to his home. In truth, he fell for her at first sight, but because she's underage, he decides to hide his feelings. However, the girl is also keeping a secret from Kurose...

(Source: Natalie, translated)