I'll give my own review since I've read the whole novel.
1: Advantage:
Quiet slice of life, love between the MC and his wife (no harem), traveling between different worlds (Darlingin the franxx, One Piece, Fairy Tail, Naruto, MHA, Bleach, Danmachi, Demon Slayer, The Rising of the Shield Hero , Shokugeki no Soma ), making friends everywhere and adopting unhappy children and everything...
2: BIG DISADVANTAGE:
The MC is literally MA#SO#CH#IST with a BIG M + BETA + SIMP for his wife who does what she wants with him (yes, I know you're going to say it's love and everything, but there's a limit to do not go over, in short everyone has their own tastes, but I prefer a peaceful relationship of love and wisdom, and I'm not saying that you have to be a CHAD to please me since it's my personal opinion)
The author understands absolutely nothing about power, let me explain:
When the MC just traveled to Fairy Tail for the first time after he was tied with ROGER from ONE PIECE, he can't beat ERZA at the beginning of the story since the author says ERZA since ERZA is stronger than WHITE BEARD!!! and any sh#it soup can beat him at first since even Jose nearly killed him not to mention the others.
After he returns to Fairy Tail the second time, he becomes OP (I like MC OP, but with a better explanation and power Ups)
His son after going Demon Slayer and training there and coming back to BLEACH and becomes powerful since he unlocked his BANKAI and after being trained by Ichibē Hyōsube and Ôetsu Nimaiya, he ends up killing Jugram Haschwalth the right arm of Yhwach and that he is tied with Kenpachi Zaraki last form (final BLEACH), so we can expect him to be super strong and all but no, the author nerfs him so much that he is crushed by a Vice Admiral from ONE PIECE after he used his BANKAI and the only explanation is that he doesn't master HAKI?? a BIG BS, after any Vice Admiral or Admiral crushes it and that's normal since the author says he can't use HAKI, but DA#MN he's tied with Kenpachi and can literally destroy ONE PIECE if we follow the logic of the author, but no, apparently the people of ONE PIECE are stronger than BLEACH which is a BIG BS since the same author says that WHITE BEARD from ONE PIECE cannot beat ERZA at the beginning of the story of FAIRY TAIL, which means that if you want to continue reading this novel, you have to unplug your brain cells, that's a free advice from me. (and yes you are going to tell me why his father did not teach him HAKI, quick answer by what he says that you have to manage on your own and not rely on him all the time, but DA#MN teach him HAKI with not even 1 second with your shi#tty system and let it manage after.
And i don't need to talk about his daughter to whom he gave him great power but after sending him to ONE PIECE he sealed his power but at least he left her the HAKI and a DEVIL FRUIT, so she can manage in this world.
Well after he became OP, there was no more training or POWER UP since the worlds are weak and all, but DA#MN you sent him to 10 worlds, so why not send him to DRAGON BALL or Cultivation worlds to find people of his caliber or stronger than him.
Oh well, the last thing to know is that the MC is weaker than his wife and I'm not talking about his MA#SO#CHIST side but statistics since the system gives his wife the same POWER UP as the MC and in addition to Triple or more BONUS, which makes his wife stronger than him, which i think he should have ( Author ) made his wife the protagonist of the novel and presto, finally we have a reliable protagonist to follow.
PS: I know that my criticism is long and all, that's why i mentioned the advantages at the beginning and of course it's my personal opinion, so everyone has their own tastes, but It seems that the MC is actually ZeroTwo, and the Novel is written in Hiro's POV.
