No matter how she's treated, the otaku always greets her with a smile as he comes to support the social worker, Misono Kazuka (ATID-660).

After years of isolating himself in his room, cut off from society, A-Cheng is greeted by He-Mei, a staff member from the support center. "Hypocrite, you're only here for the money!? I don't believe you! I'm on A-Cheng's side, please believe me. Then strip naked and clean! That way I'll believe you... I understand. If you do this, you'll believe me, right?" He-Mei, who responds to any unreasonable request with a smile, gradually opens A-Cheng's heart. Attracted by He-Mei's all-encompassing maternal instincts, and experiencing the true feeling of a woman for the first time, A-Cheng unleashes his lust like a switch has been flipped...