Oto is a caring, black-haired girl who is my childhood friend. She always teases me about being a virgin. But now I finally have a girlfriend! When I tell her, she makes a surprising suggestion: "Can we kiss? Shall I be your practice partner?" I don't want her to dislike me... Oto encourages me to kiss her for the first time. I'm moved by the softness of a woman's body as I touch it for the first time! For some reason, Oto seems unusually cute today... My first kiss and blowjob leads to an explosive orgasm. I lose my virginity with her gentle guidance. We practice cunnilingus and blowjobs in the bath. Jealousy is shown through masturbation, footjobs, and handjobs. We reverse roles and have creampie sex... and I cum a total of eight times on my childhood friend's body. The person who truly matters to me is closer to me than my girlfriend... A youthful, lovey-dovey story of losing my virginity with the tsundere, adorable Oto.