Lunchtime Accomplice

It's a secret in broad daylight — just by watching you eat, I'm being saved... or am I just crazy? Our male lead has a small appetite from a past trauma, so he hides away during lunch time. Our heroine doesn't want anyone to know that she's a big eater. What will happen when these two find each other on the rooftop at noon...? (Source: Shonen Jump Plus, translated)