Uncle from Another World (2022, AtelierPontdarc)

Major Sega fan Yousuke Shibazaki "Uncle" has been stuck in a coma after an accident for the past 17 years but finally wakes up. He claims he has actually been living life in another world; a fantasy world full of monsters, heroes and magic. Fortunately for him, his knowledge of RPGs helps him out and the powers he gained from the other...