OBA-294 The one who came via the dating site was my aunt, Sakamoto Mizuki.

Yuta is allowed to stay at his aunt Mizuki's house for the exam. I was nervous about living under the same roof with a woman other than his mother, but I thought I would start studying... A friend of his introduced him to a dating site where he secretly arranged an appointment with an older woman. He is nervous and visits the meeting place... Surprisingly, it was Mizuki who appeared there! When he finds out that he is her aunt, he feels upset, but asks Mizuki, the woman he admires, to write her a brush...