traumas are a bitch, they stay inside you and when i least expect it comes back, the key to overcome it is to just accept that it is a part of you, Takoha has accepted, it still hurts him but does not control him anymore.
Know the funny thing i didn't comment before, that monk fear was really normal, it wasn't about bullying as you would expect to go from his boisterous personality or some mysterious incident it was just him stuck in a tight place, i found that really interesting.