If You're Going to Do It, Do It in Summer

Two inexperienced lovers embark on a summer romance that's too innocent for words.

Kaisei Okitsu, a pure-hearted college student, falls in love with Taiyou Shiozaki, who is a year older and works at a beachside cafe. He starts part time job at the resort to follow him, only to find himself blushing at slightest touch. One night, Kaisei gets drunk and pushes Taiyou down, kissing him... before passing out! Kaisei convinces himself that it was all a dream. Meanwhile, Taiyo, who has noticed Kaisei's feelings, cannot stand the awkwardness and blurts out:

"Just say it already, do you like me?"

Taiyou finds Kaisei's feelings endearing and it makes him happy, but there's a reason he can't respond to his confession...

(Source: CLLENN, translated)

Note: Includes one extra chapter.