男子禁制ゲーム世界で俺がやるべき唯一のこと 百合の間に挟まる男として転生してしまいました•

Danshi Kinsei Game Sekai de Ore ga Yarubeki Yuiitsu no Koto: Yuri no Aida ni Hasamaru Otoko toshite Tensei shiteshimaimashita

"Everything for the Score"—nicknamed "Esco"—is a renowned masterpiece in the world of yuri games. A boy who reincarnates into its world suddenly finds himself in the role of Sanjou Hiiro, infamously known as "the guy who gets in the way of yuri." Hiiro is a nuisance character who ends up ruined no matter which route he's in. To avoid triggering his death flags, he begins to train and search for a safe path—but for some reason, heroine events keep unfolding around him as the central figure...!? "I don't want a harem romcom! Just give me yuri! Let me see the yuri!" (Source: MangaDex)