From Yuzu Scanlations:

Sakuto, a company employee, Kousuke, a bar manager and Yuutarou, a shop manager met in college and have been close friends ever since. Although their sexualities, jobs and personalities are different, all three have on thing in common: each has lost his grip on life, friendship and love. Their determination to overcome these bad experiences and move forward binds them together.

Souji’s life has been a series of dull events, with his parents endlessly quarreling, until he comes across Mika, a carefree student who lives each day as it comes.

They start a relationship which banishes heavy words like "love" or "devotion". They see each other occasionally, without making any promises and such.

But can an ordinary relationship make Souji say something like "I only got this far because you were with me" as Mika says “Who knows…” .

(Source: Canis Major Scanlations)