How to Talk to My Crush

Do-Hyeon is not a very noticeable guy on campus. Seung-Ju, his junior, happens to become close with Do-Hyeon by doing group projects together. But then Seung-Ju starts becoming curious about Do-Hyeon, who for some odd reason is blunt only with him. In fact, Do-Hyeon has a secret crush on Seung-Ju, and his feelings are growing... (Source: BookCube, translated) Note: Chapter count includes one extra.