Alt! Shiro is more jolly because his arm isn’t cut off and he married KEith. He still holds that Garrison Shiro’s let’s-jump-off-the-cliff-on-our-hoverbike spirit.
My favorite Sheith trope is when Keith is so used to his love being one-sided for a long time that he doesn’t recognize it when Shiro starts to reciprocate. Keith be like “Shiro gave me a friendship ring yesterday. He cried when I put it on. Shiro’s very sweet these days.”
serenbach86 