Overall an enjoyable read. I just hope you don't make the MC too strong and end up nerfing him when he travels to different worlds. ( Since this fanfiction goes in the same direction as "Harry Potter: Dimensional Wizard", really didn't like the sealing memories, regressing age to child like body etc. )

MC is too dumb, really frustrating to read, whether its overall development of her powers ( Light Manipulation etc. ), her actions or her thought process, its just 'ugh'.

Honestly a waste of time, first the translation itself ( Its a Chinese novel ), for me, a MTL is way better than this, not because of its quality ( obviously ) but simply when reading a MTL my brain "automatically" fixes errors or bad translation without breaking immersion ( thanks to hundreds of MTLs read ), here however, you are expecting a good translation but once in a while something pops up that even a MTL does better and breaks the immersion, so for that alone, not recommended. Than there is the comedy, which is personal preference, but for me a big no go, its comedy at the expense of the MC, him having to strip of his clothes to block blue stars/earths view ( like mid fight for example, because he is about to disclose information he shouldn't have access to ), or him being mistaken for the Successor as the Shemale King and even thinking he might not be a man ( which the MC did on purpose for in my opinion no fing reason ). As for the MC being OP, maybe in the later chapters which I didn't read but up until chapter 100 something, if anything he is "weak" or "fake op?", like stats and ability wise he should be OP af ( for his time spent in the One Piece Universe ), yes, having A grade physique, all Hakis at intermediate, Thunder and Dark Fruit, all kinds of physical techniques ( all Marine Six Styles, Fishman Karate, etc. ) should make him OP, but he ends up being weaker than Kuma with all of that and resorts to striping down to his underwear so he can weasel his way through.

A short story, but a complete one nonetheless, for that alone its worth 3*. The Translation is nothing special, with a lot of mistakes that break the immersion, especially the ones where the Translator mixed up the MC's name with Hermione's name. As for everything else, while research oriented and teacher MC's are my absolut favorite type in any setting, the MC's personality is so dull and boring that I have nothing good to say, except the attempt to "remove" Harry and deal with certain events in his own way.

Read up to C292. Is it boring? Yes. Is it entertaining enough to pass time? Yes. The writing quality is sometimes worse than a Chinese MTL and sometimes better. The MC is for like 150+ chapters bland and boring, the Author said its cause he has Occlumency running 24/7. Plots are forced and riddled with holes, not to mention that most of them leave the MC as incompetent and stupid. Plots are also pretty boring even if you ignore the fact that they are forced and riddled with holes. For example the Malfoy drama etc. MC is spending 90% of his time reading books, accumulating knowledge etc., which for a Harry Potter MC is my favorite type, but only if the MC does something interesting with that knowledge which in this Fanfiction is not the case, except for one time to solve a problem that came from one of the forced plots. He doesn't research anything interesting or new, an Artifact/Item or new Spell etc. Most new/interesting Spells are from his Grimoire. His special Blood Magic which he has since awakening Magic is only getting attention/development at 280+ chapters except using it here and there once a while to deal with otherwise deadly problems.

Read up to C64 and cant believe I even got that far. The MC is just not likeable. I cant stand his actions or thoughts, just a cringy 'chunibyo' on sugar even though he should mentally be 30 years old but you get this instead ( although the Author commented that there is a reason for it but that doesn't make the MC likeable ). His training arc at the beginning also makes no sense considering the slow pace of the story and once he got to Hogwarts he is barely doing any training/research and even plans on joining the Quidditch Team. So why the training arc to push him up to Adult Wizard standards? he has enough free time at Hogwarts that could've been used. The writing quality is acceptable considering he is writing in Spanish and translating to English via Google Translator. Although it looks like the Author picked up the story pace later on but the first 60 chapters are only pre Hogwarts + first 2 weeks at Hogwarts which is pretty slow for 200+ chapters in 1+ year. If you can ignore or stand the MC then this FF might be worth reading in 2-3 years.