Instead of MC saying "a friend of mine" because EVERYONE knows you're talking about yourself. He should have went "that reminds me of a story i read when i was younger. What would happen ......."
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Your wife supposedly did the same thing and you didn't believe that nothing happened (did MC and his wife talk about it and why did she take her ring off?)
So what the other teacher said was true. Blackmail now to see if powerful person is behind her or if she'll extort money