Desire for a Reply! is a Manga/Manhwa/Manhua in (English/Raw) language, One shot series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

A oneshot by Nisioisin and Miyokawa Masaru. Sunaki is a back-up player on the baseball team and he finally gets the courage to give a love letter to the idol of the school. Where will his actions take him?