Fuiuchi no Shunrai

Ren Umeyama and Tsubaki Hattori have been together since elementary school and now they're high school classmate. Next to Tsubaki is a special spot for Ren, and not for any cute and popular girls. That said, and because of this, and because Ren did not want to ruin this current distance, he could not accept Tsubaki's confession. "But, you're my friend," Ren said, and yet he had fallen in love with Tsubaki. Then Ren finally realizes that the "friend" relationship he sought with Tsubaki was based on Tsubaki's resignation and determination.

(Source: J-Publishing, translated)

Note: The chapter count includes 2 extra chapters.