VEMA-146 Sagittarius is too good-natured that even if you cum inside her, she won't get mad. The office lady Matsunaga Sana is a male-obsessed succubus.

Matsunaga-san, who always speaks little and silently completes her desk work in the corner of the company. With her plain black hair and black-rimmed glasses, her gentle and kind personality causes male colleagues to dump a large amount of work on her, but she can't say no and ends up accepting it with a smile… Every company seems to have one such introverted female employee, and the men in this company still don't know her true identity. '...Huh? Upon closer look, Matsunaga-san actually has quite big breasts (laughs)?' A casual remark from a male colleague about her, who is not seen as a woman within the company, unexpectedly opens the door to an erotic dream that no one had anticipated…