What is the manga in the last credit page for vol 1 chapter 1?

Tell me if you find out too ⁄(⁄ ⁄·⁄ω⁄·⁄ ⁄)⁄

I am not sure about the comic itself, as there are a few where the younger one has longer hair, but the author is Bohra Naono. I hope it helps:)