Finding a mangaA guy who was stuck in an area because he has a faulty system.He then stayed there for 20 ish years and became super beefy before being sent to the other world. He made a long red haired friend that's actually a dragon.
http://www.mangago.me/read-manga/otherworldly_sword_king_s_survival_records/ might be this one
http://www.mangago.me/read-manga/otherworldly_sword_king_s_survival_records/
Finding a manga
A guy who was stuck in an area because he has a faulty system.
He then stayed there for 20 ish years and became super beefy before being sent to the other world. He made a long red haired friend that's actually a dragon.