The "Pheromone syndrom" causes hypersecretion of pheromones in the individual affected, and induces sexual arousal regardless of gender in people who come into contact with the infected person.

From Seraphic Deviltry:
A series of short stories linked by a special pill and its particular effects, plus a guy in love with his childhood friend, and a soon-to-be divorced man and his unexpected admirer.

"Mamoru" is a guy who hates to work hard in vain since childhood because he couldn't get his mother's love no matter how hard he tried. One day, a strange guy, Kaoru, appears and identifies himself himself as his "brother". Because he was wounded, he stayed with Kaoru for the time being, but what will this event develop itself into?

From Ikemen Scans:

University employee Ryouichirou is ordered by the Chairman to take in an exchange student.

That exchange student, Qaltaqa, is a native from a developing country who can't understand Japanese!! Though he is a warrior of his tribe and a man of great beauty, seeing him afraid of the phone and the TV, and even the toilet, Ryouichirou gets fed up…

But while being called "Ryouichirou" in such a clumsy manner, he has a change of heart!?

Tatsuo is a makeup artist for a fashion photographer and is sick and tired of the models fawning over the new hairstylist, Haga. One morning, he comes across one of the models running out of Haga's room with tears in her eyes and has a long talk with him about how rude and antisocial he is. That's when Tatsuo realizes, Haga doesn't really know how to treat others and doesn't even have a single friend - until now?

Also includes the spin-off "Moshi Koi da Toshite" (If This is Love, Goodbye My Dear Friend).

To his co-workers, Hara Makoto appears to be the perfect elite--efficient, unruffled, and flawless, unlike his clumsy and easily flustered subordinate Mizusawa Souta. It'd be hard to find greater opposites anywhere and yet when the puppy-like Mizusawa confesses to his idol, no one's more surprised than Mizusawa when Shin accepts and they start dating. But perhaps life is relative and no matter how elite you are there's always someone else you just can't measure up to and sometimes the most hopeless person move mountains if the right person believes in them. Can Mizusawa help Shin get out of the shadow of his little brother and can Shin let Mizusawa bask in the warmth of his heart?

From Yaoi Is Life:

TURN ME BACK TO NORMAL, DAMN YOUUUUUUUUUUUUUUUUUUUUUUUU!!!!!!!!!!!

Businessman Yaotomi Eiju lives a charmed life, having been blessed with uncommon luck ever since he was young. But one day all his good luck vanishes as if it had never existed, and misfortune starts to dog his every step. Heeding the advice of those around him, Yaotomi makes a trip to pay bumbling respects to a Jizo on the way home from work. “Surely this will help somehow,” he thinks as he heads home. When he arrives, he finds a strange man there who announces, “I am a god of misfortune,”—?!

And so, with a little coercion, these two men begin to live together…

Tatsuo is a makeup artist for a fashion photographer and is sick and tired of the models fawning over the new hairstylist, Haga. One morning, he comes across one of the models running out of Haga's room with tears in her eyes and has a long talk with him about how rude and antisocial he is. That's when Tatsuo realizes, Haga doesn't really know how to treat others and doesn't even have a single friend - until now?

Also includes the spin-off "Moshi Koi da Toshite" (If This is Love, Goodbye My Dear Friend).

To his co-workers, Hara Makoto appears to be the perfect elite--efficient, unruffled, and flawless, unlike his clumsy and easily flustered subordinate Mizusawa Souta. It'd be hard to find greater opposites anywhere and yet when the puppy-like Mizusawa confesses to his idol, no one's more surprised than Mizusawa when Shin accepts and they start dating. But perhaps life is relative and no matter how elite you are there's always someone else you just can't measure up to and sometimes the most hopeless person move mountains if the right person believes in them. Can Mizusawa help Shin get out of the shadow of his little brother and can Shin let Mizusawa bask in the warmth of his heart?

A collection of short stories:

1-3) You're Hopelessly Cute
Mikuni Renji had always been serious in every love relationship. It was his bad luck to meet with people who only used him for satisfaction. Ichinomiya Shinobu, the sadistic younger flower shop prince who was his company supplier, fell in love with the Mikuni through constant teasing. Trouble came when Ichinomiya met Mikuni and his ex-partner on the street. Would Mikuni get dumped again?

4) Useless Goalkeeper
A friendly high-school student falls for his reclusive classmate.

5-6) Sorry, but I Love You
The son of a "Mama" realizes his love for his coworker, who also happens to be a cross-dresser like the son's parent.