Daiki's favorite food is cake lol though he likes hamburgers a lot
Daitaro adores cake too (he is more crazy for it than Daiki is), though aside of that he enjoys pretty much anything as long as it's not hot/spicy.
Masaru likes sweets too, though he doesn't go crazy for them or anything like that (or so he'd say). His favorite food is actually mexican food and some foods that have strong flavors. (So eating candy is like something he may want time to time though not always) His favorite dessert are cookies.
Mitsuru's favorite food would be anything that is spicy, (he likes eating chilis just as they are) likes adding it to for example nachos with jalapeños. Soo hot food and also adding ketchup to stuff! Aside of that he likes ice cream the best and cold drinks.
I'll just mention these 4 cause it'd be too much to add more haha
I'm currently reworking my story so there's no link I can share thouugh, I wanted to participate on this