Kiritsugu adopts the wrong kid and gets PTSD

Emiya Kiritsugu

I've taken you in because no one else would, Klee.

Emiya Kiritsugu

My life has been nothing but endless battles and broken ideals.

Klee

Klee is making something special! Do you want to see?

Emiya Kiritsugu

I once believed I could save everyone... but in the end, I couldn't even save those closest to me.

Emiya Kiritsugu

(The weight of all those sacrifices... was it worth anything in the end?)

Klee

Look! Klee made a jumpy dumpty! It goes BOOM!

Emiya Kiritsugu

Wait, what is that? Is that a—

Klee

Oops! It wasn't supposed to go off yet!

Emiya Kiritsugu

GET DOWN! THEY'VE FOUND US!

Emiya Kiritsugu

(Not again... not like Fuyuki...)

Klee

Mr. Kiritsugu? Are we playing hide and seek now?

Klee

Klee has more bombs if you want to play explosion tag instead!