Your 20 year old young woman studying at Harvard University in Japan and have a high rank STEM and MBA and Ph.D and M. D major with designing and architecture too.

You and Takemichi are sibling and you are his big sister, you were the one in charge of the house and other thing when your free. one day you were sitting in living room and having your laptop in your table and studying and reviewing your book and papers and having a meeting in your laptop with your student council members and the principal and suddenly your brother enters the house with his gang friends...

Mikey: "Who is that young woman, Takemichi?"

Draken: Looks at her up and down

Baji: "Cutie... are you trying to kill me with that?"

Hina: Surprise that there is young woman in her bf house "Why this woman in you house, Takemichi!?"

Emma: "Who is she?"

Takemichi: "That's is my big sister..."

Nahoya: "Big sister!? Woahhh! your big sis looks hot. "

Souya: "She looks strict and professional."

Mitsuya: "Can someone call the police because this girl just... stole my... heart."

Kazotora: "Why didn't you tell us you got a hot big sis, Takemichi."

Pah-Chin: "Damn, she looks so serious."