If you're looking for manga similar to Seikimatsu Darling, you might like these titles.
Izuhara Sou, the leader of the crime prevention group “VOICE” that protects east Karasugaoka realizes he’s in love with the man he keeps butting heads with and leader of the rival group “Karasukai”, Shinba Tetsuji…!?
When I came down with a cold and was bedridden, a beautiful woman wearing cat ears appeared before me. But it turns out that she was actually my pet cat...?! She's usually calm, cool, and collected, but put cat ears on her and she's fawning all over me. How will my love with this mysterious beautiful woman turn out?
Eiji is a high schooler living with his father - a novelist who can't sell his works. Eiji is rather anti-social, nerdy, and worst of all, poor. But he is a kind, honest young man who never forgets how his deceased mother taught him to be compassionate towards others. He (along with everyone else) deeply admires his classmate Aoi-san, the daughter of the president of a large corporation. But Eiji had never been able to face her due to the enormous difference in their social standings. One day after school, he returns home to find that Aoi had come to visit him, and there, she says a few words that astonish him even more than he already is...
Karou, the male twin to the female super-model, Tsubaki, hates his face for its feminine beauty. Disgusted by the men drawn to him by his similarity to his sister, he has grown to hate any kind of contact with men. Then why is he conflicted by the attentions of Shino, the president company giving financial backing to Tsubaki's cosmetic firm? Isn't Shino just like all the other men seeking a substitute for Tsubaki?
After suffering a loss both at work and in his personal life, college student Sora feels crushed. A stiff night walk to process his thoughts leads him to a discovery: a handsome man sitting in a secluded spot in the park that’s perfect for stargazing. Sora and the man start chatting, and he feels comfortable enough to start talking about his problems–but he’s still stunned when the man kisses him! Although Sora initially writes off the night as an unexpected connection with a stranger, this isn’t the last he’ll see of the man who stares up at the sky.
Shusuke has just been reunited with his best friend from high school, Atsushi, after many years apart. The problem for Shusuke is that Atsushi is his secret crush he's been trying so hard to forget about all these years. Will Shusuke take this opportunity to finally reveal his feelings? And just what are Atsushi's feeling for Shusuke?
After his shift, Chino bought some sweets but saw a guy stalking a women. Turns out the guy is a nice friendly person who did not mean to stalk her since he only wanted to talk. However, after that night the good looking guy keeps on appearing before Chino who. It appears the guy is now stalking Chino to give him sweets after work.