[HANABi] The one where only the girl in the party is cursed into becoming a succubus

Shun, a nervous novice swordsman, discovers his childhood companion Lily has been cursed into a towering succubus with massive breasts, horns and a lecherous tail that can milk his semen. Determined to help, Lily embraces her new demonic form, promising to protect Shun while using her seductive powers to gain experience and survive the perilous journey. The tense, erotic dynamic between the timid male adventurer and the confident, voluptuous female demon drives a thrilling, forbidden romance as they set off together.