Talk:Head Researcher/@comment-45230802-20200516122659/@comment-24053170-20200521043413

He predates all the characters.

He created the Crimson Demon Clan, which means they wouldn't exist today without him.

Considering that, his arrival in the other world happened long before Kazuma was ever even born, or any of the other main characters (this potentially includes Beldia, Wiz and several other long lived characters)

Time doesn't move faster in the other world. If you watch the second ova you will see how he came to the other world and what happened to him over time.

Its explained clear as day.