My younger sister is prettier than my older sister, senpai? / Kyoyu Fujimi Fantasia Bunko

Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.

I, 理玖 FUDO, have failed to make a confession to his classmate Saiyo Tenkotoba. The reason is that Saiyo's younger sister, Akizuki, who is a junior member of Saiyo and is trying to make an apology for what she wanted to give to her sister, isn't it OK to give it to me? I wonder! Akizuki, who is a sister of Saiyo, and a junior member of Saiyo who is getting involved with Uza, interrupted her! Akizuki offers me a devil's contract. He says, "I will raise you so that you can match up with your sister!" and he is obviously scheming something that is not good. Okay, I will do Akizuki's dirty tricks to make my wish come true! (Yes, too bad. I am the last person you like!) The younger sister of a girl you like is pushing her hard approach love talk!