Douyara Ore wa Imadoki Gal na Toshiue Osananajimi kara Gekiomo Kanjou wo Mukerareteirurashii

どうやら俺は今どきギャルな歳上幼馴染から激重感情を向けられているらしい

Yuito Kujo, a high school student, constantly compares himself to his exceptional older brother and sees himself as a lesser, "degraded version." Caught in a spiral of self-deprecation, his adolescence turns even darker when he discovers that his childhood crush, Suzuno, is in love with his older brother.