A favorite childhood friend gets off on someone else's dick! Lose your virginity right in front of you! Overwritten sex in a park of memories! Blue sex on the beach! She is getting more and more addicted to sex, and she shows it to me! But I still can't tell her how I feel...! 
 
The main character returns to his hometown and reunites with his favorite childhood friend, Mayu. Mayu is still as cute and kind as she used to be. Mayu talks to him aggressively, and he wonders if she has always been in love with him. The protagonist has faint hopes that Mayu has always been in love with him. But then Kaizaki, the ace of the basketball team, shows up! He confesses his feelings for Mayu right in front of her, and even steals her virginity!! The hero is in despair, but he can do nothing but walk away without being able to say anything... After that, he just watches from the sidelines as their relationship develops. However, he decides to confess his love to her, saying, "I've always liked her more than that guy...!" He decides to confess his feelings to her...!? 
 
A must for any erection!!! I have no choice but to masturbate while peeping at her lasciviousness...!? The gold standard of BSS manga has come down!!! 
 
(Source: Mujin Comics, translated) 
 
1-5. Boku ga Saki ni Suki datta no Ni (僕が先に好きだったのに); Comic Mugen Tensei 2021-04, 07, 09, 11, 2022-01

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