Responses
He wants what happened to him to be acknowledged, that what he went through wasn't "oh, it happened". It looks like he felt trapped and from what the scenes at he was sexually tortured. (Being bound is a form of torture). The others got something for their suffering, but he got erased from the the orphanage and "forgotten".
He alr kicked the bucket what revenge is even gonna happen, just let it go cause this minwu dude is just planning to ruin ur life more....