If you're looking for manga similar to Necktie and Praying Mantis, you might like these titles.
Yoshinari is a handsome and capable salaryman who is really popular with women and Makabe is his senior who isn't well liked despite being someone who is great at taking care of others. These two are famous in the company as the duo with the huge gap in capabilities. One day, Yoshinari condescendingly provoked Makabe saying, "I will confess to the person I like, but only if you manage to get married."...
Himeko and Shibui not only work for the same company, but had also attended university together. Himeko was wildly popular, and nicknamed "The Prince". But whatever Shibui may be trying not to recall about their shared past, one thing is certain. Their present and future are tangled together, with the past knotting it quite firmly. Seeing Himeko everyday, Shibui finds his feelings ever more swayed. "Whatever it takes to get you..."
When Komagatake "Koma" Sato, a mid-career hire, shows up to the office on his first day of work wearing baggy clothing and gaudy jewelry, the person who's chosen to be his supervisor is Shiro Kuzumoto. But, this new guy steals office supplies, never speaks politely, puts his feet up on the desk, etc... Due to Koma's brazen attitude, this is more like training a pet dog than teaching a new co-worker the ropes!! However, despite his carefree ways, Koma is also surprisingly obedient. Their lifestyles being very different, Shiro has a hard time understanding him... Or, that's what he thought until Koma asks him out with a hungry look on his face! He makes Shiro do wild acts! How will Shiro overcome all of these obstacles!?
From good morning to good night, working like a horse, aiming for the betterment of Japan’s tomorrow… that is the duty of a civil servant (Koh-Boku), a public official of Kasumigaseki. One such Koh-Boku, Kyuu-san, has Kashiwagi by his side, a super-elite who is a dozen years his junior. Even though he thinks that he really should push his junior to stand on his own, he couldn’t bear to be parted from the pleasure of working passionately every day with Kashiwagi… but a cozy relationship that could turn romantic…?!
After a difficult time of being dumped by his lover and getting hurt by falling down the stairs, Shinshu meets Fushimi at work, where he is assigned to help him due to his injury. Fushimi is tender and thoughtful towards him, which is a different experience for Shinshu.
Muromiya is a short salaryman who gets teased a lot because of his height and gets assigned to train new employee Sera, who’s super tall. It’s pretty obvious that Sera thinks Muromiya is super cute, and one day after a drinking party they kiss...
Asagi, a salaryman, works for a production company for his favorite character, Docky. Asagi has hidden his love for Docky because of past trauma. However, on the day he got sick and left early, his colleague Iwamoto, visited Asagi's house, and saw his room filled with Docky. Iwamoto, who hasn't had much interaction with Asagi until now doesn't seem to care at all. Thanks to Iwamoto's kindness, Asagi gradually becomes able to be himself as he is without worrying about people's reactions.
Satsuki and Kippei are your regular coworkers. Kippei is Satsuki's subordinate and listens to his requests like handing out papers and... kissing him?! Correction: Satsuki and Kippei are NOT your regular coworkers. Their physical relationship started thanks to a mix-up with hotel rooms on a business trip, and since then, they have fulfilled each other's carnal needs and acted like friendly coworkers at the office. Satsuki starts wanting more with Kippei but decides it better to stay as they are to avoid ruining their relationship. But will they be able to stay work partners for long?
Naoto Sewa works at a marketing company during the day and at a gay bar at night. During a gay matching party at the bar, Nibu Kazuma, who's straight, mistakes it for a marriage matching party... Sewa saves Nibu from some unwanted attention and sends the man on his way. However, unexpectantly the next day, they meet again at the marketing company where they turn out to be colleagues. While spending time together as colleagues, Sewa can't help but be attracted to Nibu's kindness and sincerity. But Sewa swore that he would never fall in love with a straight man again!