(salutes!) Would it work to put it into the history -- something like, Tohsaka Daddy is Kirei's senpai and belonged to the same church as Kirei. During his youth of being a trash-fire, Tohsaka-Daddy was pretty cool about him and so if asked for a favor, Kirei's like, "yeah sure, I owe you a lot, my guy."

Kirei is very oddly happy that Sakura just shows up so he can be like, "Ah, how amazing... are you new to this city? I had no idea. NO IDEA. How about some free food... s-sighs.... /makes actual ramen.................. s i g h s..."

Totally random. Just a random buff-ass ramen shop owner here to help out from time to time. NBD, NBD.