Yonemura, a supervisor of a convenient store, and his boyfriend Ando, a cheeky part-timer who’s over ten years younger, are not in an intimate relationship yet. But soon, Ando will celebrate his 20th birthday, so Yonemura is secretly planning something. Due to Yonemura's busy schedule, they can barely see each other. Then enter Mitsuhara, a new part-timer who can't seem to control his hands around Yonemura. Problems start to rise between the three!

Kitagawa Ryouno is the company's most popular hottie, and the ace of the Sales Department. But he has a secret he can't tell anyone. He's a coward, whose face turns red from any unexpected turn of events.
Therefore, from the day he noticed that he would calm down in front of his strict and awkward senior Natsume, the hope of Development Department, he became attached to him.
On the other hand, Natsume has his secret, too. He's gay and has his eyes set on Kitagawa, ever since he joined the company... 4 years ago.
Thus begins the impossible office love affair of a Sensitive Salaryman (Straight) x a Workaholic Employee (Gay)!

Okada is once again dumped by his girlfriend. He runs into Kitazawa, an old friend, and the two end up talking about their days at school... before landing in bed together. Includes several other short stories as well.
-MAL

From Fujoshi Bitches:

Your heat won’t leave my body.
Miyama, who always kept having one-night stands and won’t have a serious relationship with anybody, is having an unrequited love for his colleague, Imoto.
Even though he has already made up his mind that he won’t sleep with Imoto because he loves him, for some reason, he ended up sleeping with him.
Although he wants to pretend that all of that never happens and return to their normal relationship like before, Miyama can’t forget that night’s heat no matter what…