Tsuji and Aizawa have been friends for years—until one day, out of the blue, Aizawa kisses Tsuji and confesses that he’s in love with him. Tsuji wants to stay just friends, the way things have always been between them—after all, love can be messy, and things are just better keeping the status quo—but will they really be able to do so, or is it love-or-nothing between them?
(Source: MU)

From Shinmakoku Scanlations:

Oosawa had known Yoshioka for a long time... As his customer, Yoshioka came in and out of the shop with different boyfriends all the time. He thought he knew fully well what kind of man Yoshioka was. But when tragedy hit Chizu, his one and only daughter... and his capability as a single father was questioned... Yoshioka came out of nowhere and offered help. Slowly but surely, Oosawa learned that the man he despised was very different than what he appeared to be!

Shiraishi has been seduced by his so called "Best Friend" for 6 years since they were both in high school. The train they take to work, their favorite music, their sandwich choice for lunch... always happen to be identical. That strange relationship would never ever change, supposedly. But now that Shiraishi is divorced, it could be just a matter of time before he gets himself scored.

(Source: Shinmakoku Scanlations)

Included one-shot: 1+1+1

From Shinmakoku Scanlations :

Chiaki Kirino is a regular high school boy with nothing.
No family, no money... and no home in the near future
unless he finds a job before graduation.
His heart is also empty, always looking at the same boy, Fujio,
never finding the courage to start a conversation,
partly in fear because he knows he has nothing to offer.
Just being in the same space with Fujio makes him content, or so he thinks.
But one day Fujio comes and sweeps him off his feet in a sudden confession.
What is really happening, and how should he react to this?

From Shinmakoku Scanlations:

People say first love is the hardest to forget... And it is, at least for Hiroto. As much as he wants to, he just can't get Wataru out of his mind and heart. That guy next door, who is five years older than him, now even has a lover, and clearly is not interested in him. Hiroto has to learn to live with it... and with Wataru as his roommate, forgetting will certainly be the hardest thing to do.

Pairing: Nitori x Rin

In High School they had an indecent relationship. Now eight years later, at the school where Takebayashi is a teacher, that same Ono has come to be the school nurse. Smelling like an old man, sweet pick-up lines, totally aloof and bantering Ono. Takebayashi sighs. He gets angry, fights, and is surprised later… to find himself in Ono’s arms?
(from Blissful Sin)