It's about two guys who are working in the same convenience store, and one of them seems to be strangely attracted to the other.

(taken from the Evil Empire)

Hiro and Ritsu have been friends for over ten years, but Ritsu's terrified that Hiro will get scared off if he realizes Ritsu's feelings for him. Although they don't seem to have much in common anymore, Hiro still stays overnight at Ritsu's place every time he has a business trip to make. All Ritsu needs to do now is figure out if Hiro actually means anything by it... ~from Vices'n'Devices

1-5, 6-11) It's all the little things that Ikeuchi does that makes Shinoda want him. Shinoda's been gay for as long as he can remember, but he's still a virgin. Then he falls in love with Ikeuchi, a younger man on the same basketball team. However, Ikeuchi has a girlfriend... is there any way Shinoda can make him want him?

5.5) Hotta-san is secretly in love with his co-worker Yoshi, but Yoshi saw Hotta-san and their boss going at it in the Archives Room. Is there any hope for Hotta-san and Yoshi?

5.6, 12) 2 short stories about Shin and Haruhiko.

From Blissful Sin:

1-2) Shoujo Mangaka no Koi (Love of a Shoujo Mangaka)
(Adapted from the original oneshot)
“If I could be of any help, would you want to try it?”
To help incorporate boy’s love elements into his work, the unpopular shoujo mangaka Akimoto Yuu and his editor, Kurata, decide to carry out their own experiment.

The story of an awakening love that is embarrassing but warm.

3) Shoujo Mangaka no Koi Omake

4) Seppun Shuugyou (Kissing Lessons)
Seiji still thinks about the time he walked in on his childhood friend Daigo masturbating. Now Seiji can't help but do the same when he remembers it and it seems Daigo can't either; so what will our frustrated couple do when a co-worker takes a sudden romantic interest in Seiji?

5) Natsu wa Hagakure (Shadowed by the Leaves of Summer)

6) Hug Me, Hold Me

7) Tokyo Hotel

8) Passionate Pen Pals

Afterword