Summary Banggusok Hero from Kainu Manga
Banggusok Hero summary: For years, Na Gangnam has been mooching off his unfortunate mother's hard work without a job. However, one day he resolves to change his ways and become a responsible son, beginning the next day. Suddenly awoken by a commotion, he peers out his window... only to discover a mysterious slime in his front yard! Before he knows it, both he and his entire home are whisked away to a fantasy world! Now, Gangnam must embark on a journey back to his true home - his mother's house. This is the premise of the original webtoon.
