Hey guys this is an idea of what if Asta, Deku, Tanjiro and Itadori were transported to the world of RWBY.
The story would essentially start out with Salem finding ancient forbidden magic. She performs this magic causing a spatial distortion but she gets a Grimoire in the process that increases her magic power and allows her to make more powerful grims.
However due to the spatial distortion Izuku, Asta, Tanjiro and Yuji transported to the RWBY world from their respective verses. They wake up together in a forest with Izuku figuring out they are from different worlds and try to get information about the place of where they are.
They soon encounter grim terrorising people and they all intervene. Ozpin and Goodwitch catch work of this and confront the 4 boys. It then leads them to getting admission in Beacon and becoming temporary hunters in training until they could figure out a way to get home.
They would be called Team MATY and be the best physical team. They would actually have a friendly rivalry with Team RWBY. Despite that rivalry the members of each Team would develop feelings for each other member.
Izuku x Ruby
Asta x Weiss
Tanjiro x Blake
Yuji x Yang
(A/N: Like am I the only one who finds it unbelievable how well these ships fit each other so well. Like it's like these 4 MC's were made for these girls. This has to be more than a coincidence or something.)
Over time the 4 would learn Aura and develop their own semblances later and beat more grim which have noticeably gotten stronger.
Salem and Cinder would then set up the invasion earlier to try and destroy Remnant and everything mankind holds with Team MATY stopping her.
This isn't a fanfic but an idea that if someone wants to create they can, hell I could create this fic in the future though I would love to hear your thoughts about this idea.