【Flirtatious Heat Bookstore】Ichiyo Iroha is turned into a choroin by her former tortuous senior.

Hiya Hachiman: He tends to indulge those who come inside of him. Recently, the twisted dere has been on the decline.
Ichiyo Iroha: She follows her senior to the same university, and uses every trick in the book to ensnare him. I thought I had done it, but then I was spoiled by my senior who became my boyfriend. If the person I was in high school were to see me now, they would probably fall apart.

It’s a story about two people who, despite a little trouble (i.e., an annoying drinking party), love each other, get horny, and make out in a sweet and erotic way while drinking at home.