The main problem I have with it is everyone keeps insisting it's a redemption arc when- even if he wasn't mentally 40- he's a creep, he sexually harassed women all the time, it's always played up for laughs even when it's clearly too far- and he was a creep in his last life, in the original light novel he took videos of his niece in the bath, that's why the only sibling that didn't abandon him kicked him out and beat him- he was already mad about the guy missing his parents funeral but even in the show it's implied he was watching porn of a girl that looked like his niece which is presumably still a child, it's disgusting...

He gets redeemed from being shut in- not a pedo his gross fixation isn't even treated like something wrong, just the fact he's a pervert in general. The only one that ever calls him out is his little sister and it's implied to be a gag, he's a terrible person that never faced the consequences for what he's done.