Looking for manga with a twin tailed girl has a tomboy/sporty appearance
probably something g with a childhood friend feel if possible
and with the tsundere attitude would be nice if possible but not gonna care to much about it

Thanks mates

Hidan no Aria possibly?

P.S. It's seinen.

Raimei from Nabari no Ou: Twin-tailed, tomboyish tsundere.

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Not sure if all of these fit, but...

Back to the Jack, Meguru (though I don't know if she qualifies as a "tomboy")
Black Rock Shooter - Innocent Soul, Rock
Big Order, Rin
Bushido Sixteen, Sanae (not a tomboy, but she does do kendo)
Carat!, Kanon? (not really a tomboy, but not really "girly" either)
Nisekoi, Marika (was a tomboy and a childhood friend)
Rozen Maiden, Shinku maybe? (not really a tomboy but has a bit of the tsundere attitude)
Tsunbaka, Tsun (not really a tomboy, but a childhood friend and a tsundere)
To Aru Kagaku no Choudenjihou, Kuroko