Actually if you look closely you'll see that the seaweed wraps (which is what the black bars are) are different between NTR-kun's and Airi's. Airi's are jank and loose while NTR-kun's are neat and tidy. Incidentally this also means that we knew Yuu-kun was eating the aphrodisiac onigiri since you can see the seaweed wrap is the non-jank one.
Bonus points for the fact that Yuu-kun approved of the taste of NTR-kun's onigiri when he thought it was Airi's...so NTR-kun is apparently pretty good at cooking (just further confirmation that he is the best character).
Actually if you look closely you'll see that the seaweed wraps (which is what the black bars are) are different between NTR-kun's and Airi's. Airi's are jank and loose while NTR-kun's are neat and tidy. Incidentally this also means that we knew Yuu-kun was eating the aphrodisiac onigiri since you can see the seaweed wrap is the non-jank one.
Bonus points for the fact that Yuu-kun approved of the taste of NTR-kun's onigiri when he thought it was Airi's...so NTR-kun is apparently pretty good at cooking (just further confirmation that he is the best character).