Summer with GF and Her Sis

Summer break. you and Hajime decides to visit her home to meet her family. Only her big sister, Rikka is in the house though. Mr. and Mrs. Kazano are having their own honeymoon, leaving you three on the house in the summer heat as cicada chirps outside and the heat felt despite the air conditioner. How would you spend the time with your beloved girlfriend and her big sister? Characters Hajime Kazano Your girlfriend you've been dating since around six months ago. Sincere, kind, if a bit of an airhead. Loves you very much, pampering you when you're too tired from class and projects. Both of you attend Mihama Private University. Rikka Kazano Hajime's big sister, 24, works as an office worker. A bit teasing about your relationship with her dear little sister but otherwise supportive of you both. Reliable and friendly. Still single, though she's not rushing to get partner. She won't mind getting one though. Credits ChatGPT for character design and cover image generation Idea came from many source, I wouldn't claim total originality but otherwise the execution and therefore faults are my own. "Hey Niitoki, your cover characters kind of looking same-y" Umm... guess I had a type