the powers of Giselle Gewelle from Bleach
I had to look up who this was. You are correct. The powers Deku has in Cursed Blood appear similar. Not exact, but very similar.
How fast a romance should go on in a story (before becoming official), is a subjective matter. There are some stories I'm fine when the shipping takes greater than 100 chapters to become official and others where if it's less than 5 chapters, I drop the story out of impatience.
Here is a humor story recommendation from me,
My False Love Academia by
DarkenRaichu
story link:
https://www.fanfiction.net/s/13952918/1/My-False-Love-Academia
The author describes the story excellently - it's serious crack. i.e. it takes a silly idea and takes it to humorous extremes. In this case, the idea is that Izuku's father returns to spend time with his son and explain to him the family business - that they are one of the most prominent Yakuza families in Japan! Being a good guy, Izuku is understandably upset. His father then explains that to prevent a war, his son needs to enter an arranged marriage with the child of another powerful criminal organization. The daughter is Himiko Toga. As the story progresses, we learn that the TRUE powerhouse of the entire cast is actually Izuku's mother who's voice spreads fear into those who upset her.
I had to pause reading around chapter 4 or 8 - not because the story is bad, but because I had to stop chuckling in my seat! Out of curiosity, I jumped to the last chapter to peek ahead and STILL kept chuckling!
This is a story worth reading and having fun with! Not too many grammar mistakes (that I can tell) and its easy to read.
Having read that, I started looking for some Izuku/Himiko stories. Sadly, we don't have many. A trifle too many of them are harem stories which, are not what we need when we want to get our fix for a particular couple. Nevertheless, I will mention this story,
The First Pillar by NorthSouthGorem, Soleneus
story link:
https://archiveofourown.org/works/27596516/chapters/67510637#workskin
Oh. I did not realize until now that there are 2 authors for this story. Regardless, I will recommend the first few chapters (1 - 4) for the Izuku+Himiko moments. I found the friendship/bonding moments sweet. Basically, a very young Izuku stumbles across a very young Himiko who is thirsty for blood. He offers a bit of his, she enjoys it and the pair have fun together. Then a chapter or so later, Izuku discovers that his friend was kicked out of her own home for being a freak. He brings her to his own home (and mother) and lots of empathy/sympathy/caring happens. Some hate is thrown towards Himiko's parents, and she starts living with Izuku - and I really liked how the couple cuddle together.
Then the author drops the bomb and the story goes in a harem direction where Himiko starts looking for other companions to help her boyfriend. I'm just amazed that the writing did not go hentai. Perhaps it did, but I stopped reading. An odd situation, is that Bakugo is female. Taking the rest of the events into context, it is almost certain that she too, would become part of the harem, but for the first few chapters, it is irrelevant.
Leaving the best for last, here is my most favorite Izuku+Himiko story,
Inked by
Sewrtyuiop
story link:
https://www.fanfiction.net/s/13093259/1/Inked
This is an AU story where Izuku gets kidnapped before canon events. He comes back with a quirk that allows him to materialize tattoos on his body (am skipping over quirk details for sake of brevity). He encounters Himiko and befriends her. For her part, she's happy to have found someone who does not shy away from her. And since she finds Izuku attractive, she pulls out all the stops to form a relationship with him. On his side, he does not push her away and eventually succumbs to her charms.
Izuku and Bakugo are bros/best-friends in this story. Bakugo and Himiko end up bonding over their mutual affection for Izuku. He (Bakugo) does not trust her initially, but when it becomes obvious that she cares for him and does not intend anything malicious, he leaves their relationship alone.
The stations of canon are followed in this story - but there is plenty of extra material that the story remains fresh. I really, REALLY like how the three (Izuku, Bakugo and Himiko) get along. You can feel them growing and changing chapter to chapter. It's fun and good. Something I appreciate is that both Bakugo and Himiko are competent fighters in this story. Yes, Izuku is the tactician of the group, but neither of those two depend on him. They can win battles just fine without his input.
And speaking of battles, there are a lot of them in this story. As another writer, I'm envious. A complaint (perhaps out of jealousy?) is that we see a *lot* of fighting from the other classmates too. In other stories, I would have found this to be filler material, but in "Inked", they are so well done that I'm just impressed.
Check out "Inked" folks - its worth reading, IMO.
-chronodekar