Title: Gokushufudou | 極主夫道 | Way of the House Husband

Genre: Slice of Life, Comedy, Yakuza (sort of.)
Description: "Immortal Tatsu is an ex-yakuza who’s given up violence for making an honest man of himself - but is it still possible for a devoted stay-at-home husband to get into a few scrapes?"
Reason for recommendation: Shit is hilarious. The comedic timing and deadpan gags are amazing. The scariest yakuza in town is out here drinking Respect Women Juice every hour of his life and inspiring his former fellows to follow their dreams of making amazing crepes, fighting deathly battles against roombas. If you want something light-hearted that will also teach you life skills, check it out.
Find it: here on MangaDex, with links to official versions and purchase options.
More info: There's a live action in the works and I cannot wait honestly.