Raising Hell: A Demon's Guide to Parenting is a Manga/Manhwa/Manhua in english language, Comedy series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

What happens when a demon is out-deviled by a child? It doesn't take long for the former "Demon King" of Hell to be domesticated by a pint-sized human he attempts to raise.