Seduced by Bell-senpai!

The protagonist recently started dating his childhood friend "Hinata," who is a half-succubus. To control her succubus abilities, he spends his days making out with Hinata in his room... "That's right. There's a pure-blooded succubus senior!" With that thought, he heads to see "Bell," a succubus. Bell is surprised that the protagonist is in a relationship, but she agrees to listen to his troubles... or so she says? Under the pretext of "practice," she presses her huge breasts against him. "Whoa, what is this? They're way too big...!" "No, no—I have Hinata! I absolutely have to refuse this, I shouldn't cheat...!"​