Do you (not) know God Grid? What about Kimchi? https://forum.novelupdates.com/threads/do-you-know-god-grid.62592/
He is in his early 30s. He was 27 or 28 when it began and it has been 4-5 years at the current translation.
Thanks for the knowledge, it will be of...some use... But I feel like he should be younger, seeing as Yura was 21 at the start. Hmm