I need help finding a manga title

[yefta03]

• I'm looking for a manga about a tomboy girl with shark teeth and her short guy friend
• manga about love triangle between the boy, gyaru, and his childhood friend (it got anime few years ago)

 

[Syri]

I'm pretty sure the first one is this - https://mangadex.org/title/6cc0f7c2-0db6-432b-8189-fcedbcdda888/hitomi-chan-wa-hitomishiri

The second one I think could be https://mangadex.org/title/b4c93297-b32f-4f90-b619-55456a38b0aa/fuufu-ijou-koibito-miman but not really sure on that one as it's a bit of a vague premise and not something I've really seen much of in what I've read/watched.