You may not understand this chapter fully, but It will be clear in the future.
-------------
'Eh?'
'The Insect Race'
This touches a bit on Reji's blind spots in knowledge.
Previously, he had some understanding of elves, thanks to the notes of the Great Guardian from his first playthrough, with Malvin having communicated and connected with Elvis's world.
But for the other worlds observed by the remaining Great Guardians, which were invaded and destroyed by the demon races, such as the dragons, the orcs, and now the mentioned insect race, these were merely glossed over in the notes, rarely mentioned by Malvin.
Moreover, even after the Great Guardian passed away, leaving behind a legacy for him as the "Son of Destiny", the unique "Method of Observation" that transcends worlds was not included.
So, when Reji took over the position and became the new Great Guardian of the human world in the game, he couldn't observe other worlds like Malvin did.