I cant believe I've just thought of this comparison now but doesnt Gatts and Caska's relationship sort of mirror Gambino and Shizu's.
Shizu insane after miscarriage/ Caska insane after rape and miscarriage
Gambino great warrior couldn't handle Shizu going crazy wanted to forget through war and battle (IMO)/ Gatts couldnt handle caska insane went out on revenge
Maybe they were meant to find Gatts, Maybe thats why Gatts protects Caska because he remembers the way Gambino left Shizu to die alone and the pain it made her feel and the path which he was on would lead him to become Gambino someone he hated and loved
Shizu insane after miscarriage/ Caska insane after rape and miscarriage
Gambino great warrior couldn't handle Shizu going crazy wanted to forget through war and battle (IMO)/ Gatts couldnt handle caska insane went out on revenge
Maybe they were meant to find Gatts, Maybe thats why Gatts protects Caska because he remembers the way Gambino left Shizu to die alone and the pain it made her feel and the path which he was on would lead him to become Gambino someone he hated and loved