[Reducing Mosaic]SNOS-026 My tsundere childhood friend... she said to me, 'You got a girlfriend, so I'll help you with premature ejaculation training' and then had jealous self-promoting sex. Shiori Airi

Childhood friends Nagisa and Higa have been at each other's throats since forever. ● After becoming a high school student, Higa started his first girlfriend relationship with a female classmate and was living in bliss. Behind the scenes, Nagisa had secretly received a consultation from her: 'Higa is having trouble with premature ejaculation.' Despite her complicated feelings, Nagi offers herself as a practice dummy for blowjobs to the east under the guise of 'training'... Is this an extension of teasing? Jealousy? Or something else?