Nanzenkai mo Tsutaeru yo!

Taisei and Chifuyu are childhood friends. Although they have different personalities, they always do everything and go wherever they want together, and are super close friends...or so they thought– "I'm breaking up with you!!" When his beloved Chifuyu tells him that they're no longer friends, Taisei realizes his own feelings...!? A heart-pounding childhood friends BL story that starts with a breakup♪

(Source: Takeshobo, translated)