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The Elderly Killer who had been betrayed, returns! But…No one recognizes me?! “I’...
It not regress etc, but Mc's body get return to when he was young but still in the same timeline. MC was the best n the elderly killer, betrayed by the new boss. W young body he want to get revenge and so on. Its interesting but its kinda annoying to the girl, its weird she get the feeling of annoying girl w crush. Well the mc is granpa im sure it has no romance but just on sided, but still its kinda annoying. Its kinda hard to describe sorry, well just read it, its worth!
For me its 8/10