Hito Wa Naze Hataraka Nakerebanaranai No Ka
The last one (Call Me) was the best! Actually very sweet and throughtful alongside the comedic tone.
Himono, Tokodoki, Shanairen'ai
1-4 is a fun ossan/younger coworker romance. Short and simple, not as good as Cupcake, but good as it is! 5 is a college student/sensei romance (meh).
Hina wa Mitsuiro no Koi ni Torawareru
Interesting. Guy that toys with men falls in love, denies it to himself, cheats because that's what makes sense to him, then endures a decent round of soul-searching and not taking care of himself out of angst for refusing to accept his feelings and hurting the person he loves. And the guy who was cheated on actually has a backbone, and doesn't reconcile until the evidence of just how badly affected the top's health is is right in front of him. Dramatic, but effective. The art is *okay*. Their other works are those harlequin manga adaptations.
Hanagaya Eigyousho No Kare
Moves oddly fast and doesn't have a lot of actual romantic events, just the drama of getting together and then sex. But the last chapter is interesting in how forthright they are with their feelings.
Koi No Senryaku Management