A completely subjective drama in which Fitch's exclusive Reina Taozono enthusiastically plays her big-breasted sister who loves her brother too much! Reina is a younger sister who has been afraid of her brother complex since she was little, saying, "I will definitely marry my brother in the future!" However, I was quite shocked to have her first girlfriend ... I will introduce it to my parents this time off, but Reina, who wants to tear up her relationship with me, tries hard to get my attention while sweating hard.