I figured some people may want to know without going through the actual effort of finding out themselves, so here’s a quick and easy guide of the preferred Legumetines beans of each characters.
Ryouta: Calm Corn
Sakuya: Racing Blend
Yuuya: Bitter Black Beans
Kazuaki: Country Millet
Nageki: Country Millet
Okosan: Swollen Hemp
Shuu: I don’t think he prefers any in particular; racing blend will trigger a different reaction, however. I like giving him bitter black beans.