[Oh no this is so good for his little Souji heart... He's the sort of sponge-like person that absorbs what he's around, so the appreciation of optimistic hope is only going to make him hold onto it even more tightly.]

You don't seem like the kind of person to make a promise lightly. [A bright smile right in return!] And neither am I. I promised to protect and serve Kondo-san and his dream, so as long as there's any part of me that still exists and can do something about it, I'll never stop moving forward.

[This sounds so sweet only because no one here knows he's a manic murderous yeet yet.]