ダークサイドにようこそ!
Dāku Saido ni Yōkoso!
Welcome to the Dark Side!

Yamazaki has another date with Nanako, but when he sees her with another guy, he does not believe her that it was just coincidence and leaves. Tatsuhiro and Kaoru decide that Misaki is being purposefully mysterious and misleading. They stalk her in order to find out her real motives. Tatsuhiro has a dream in which his appliances warn him that he will be doomed to be a hikikomori for the rest of his life if he falls for Misaki.