The anagrams are gears, rages, sager, or sarge (nickname).
Change gears
Noope. Well, I don't know about the manga, but he doesn't in the anime.
Those letters will spell heating.
The unscrambled word is "synchronism."
The unscrambled word is "synchronies."
The unscrambled word is "socioeconomic."
The unscrambled word is "evolution."
The unscrambled word for "EEFSILB" is "BELIEFS."
The unscrambled term "nkgsciot" is "stocking."
The word "sevatoncroni" unscrambled is "conversation."
The unscrambled word is "siphoning."
The word "cetinnotn" unscrambled is "connection."