Soljikago Daedamhage

Tae-Oh, who had secretly loved Hae-San since elementary school, worked tirelessly to raise his college entrance exam scores by two levels. He finally enrolled at the same university as Hae-San, determined to confess his feelings once he became a confident adult. At the freshman welcome party, Tae-Oh bumped into Hae-San as if by chance and impulsively confessed. The two began dating as if by accident. Now, Tae-Oh is utterly intoxicated with the joy of finally being able to do all the XX things he'd only ever imagined! But can he really subdue Hae-San, who claims his ideal type is someone devoted and pure, with all these XX acts?

(Source: Ridibooks, translated)

Note: Includes two extra chapters.