Does anyone know manga when male omega get pregnant and runs off , haves the baby but the ...

I'm intrigued

maybe
http://www.mangago.zone/read-manga/hyacinth/

Yep...hyacinth, dear benjamin, Kekkon Shite Kudasai!..It's becoming a commonplace theme huh?

Dear Benjamin!! ╮(￣▽￣)╭

http://www.mangago.zone/read-manga/kekkon_shite_kudasai/
http://www.mangago.zone/read-manga/kekkon_shite_kudasai/

http://www.mangago.zone/read-manga/daiya_no_a_dj_single_mother_eijun/ here's one if u guys don't know this one.