Thank you for the TLs! It's great to be caught up.
The page you're curious about is the one where he mumbles something after his inner monologue to Tomoe who replies with a "Yes?"? She didn't read his mind, she's just confused with his face being serious all of a sudden.
This is before "With Great Power Comes Great Responsibility" was ever said.
The author is good at making Mary Sue a psychotic airhead crybaby that we all can hate. A character with too much power, no restraint, no regard for lives unrelated to her and in need of some serious comeuppance.
The official excuse she gave was because he was Rank E. Rank E heroes take forever and a half to level up to the C-, B-, A- and S-tier heroes that were in his class. Everyone had a low opinion of him (low rank, background mob character and all) and didn't need more than that to see him get...