Gin Ichimaru vs Kaname Tousen

No restrictions.

Win via kill.

Gin probably.

Hollowfication makes Tousen stronger, gives him decent regeneration, and his bankai is practical.

Gin, I don’t know if Tousen can deal with the speed of his Bankai. Also Tosen seems like a glass cannon imo, iirc he was 1 shot by Kenpachi while in Bankai and killed by Shuhei with a sneak attack. I feel like Gin would kill him easily, Tousen’s Bankai is gonna be difficult but if Kenpachi can figure it out I bet Gin can too.( If they don’t have knowledge)

Gin wins

Gin should blitz and one shot in Bankai imo

Tosen Reks

Shoot em dead Shinso

Gin

Tosen dodges Buto casually and smashes.

Could go either way imo but in experience I'd say Gin>Tousen.

Gin stomps. Tousen lost to Komamura and Shuhei, low fodder tiers compared to Post chrysalis Aizen Gin almost killed. Gun could also sense aizens reiatsu which regular captains couldn't.

Gin wins with some difficulty, in terms of overall power he should be similar to Ressurection Tosen, the problem here is that Gin is a character that can fight above his paygrade due to his Bankai Ability, as long as he can harm/scratch his enemy then he has a shot at winning.

Mask + Bankai Ichigo = Bankai Komamura < Ressurection Tosen

Bankai Gin >> Mask + Bankai Ichigo.

Gin wins with bankai.