im used to anime/manga nonsense, but this has to top the charts. The entire manga is about his alter ego as a tutor, and his "disguise" is literally just glasses. People clown on superman all the time for this, its just silly.
Then theres the fact that the MC should have cleared up the misunderstanding straight away, but of course him not doing that becomes one of the main plot points.
This entire manga so far has just been cliche after cliche and characters being braindead because they have to be for the plot and drama to exist. Its deus ex machina levels of contrivance.