Harumei

I, Mei Tachibana, have two childhood friends. Haru-nii is 10 years older, and he and I have been like siblings to each other. Ren is my age, and before I realized it, he was always by my side. To me, both of them are precious and irreplaceable beings. "What does it feel like to be in love?" When I turned 16, I began to wonder, and little by little my relationship with the two of them began to change...

(Source: Kodansha, translated)