Ok so after taking my time on this so important matter I would say.
Tsuneyo: She clearly would have very big penis, maybe a too big one, in an ulhealthy way, one that would be more hurtful than other thing.
Ayane: She gives me big penis aura idk why, she would have a penis that would be considered very impressive at least, she would still be humble about that tho.
Kirin: she would have a big penis too, but her would be the kind of penis that is long but skinny (or normal), that would give her a little extra confidence about her, she would be the kind that send dickpicks believing that is a hot thing.
Nodoka: She would have an ok penis, good size, a very pretty one, she would fine about it knowing that she have a good wiener but most important, she knows how to use it properly, making her very confident about her sexual performance.
Sana: Impressive enough, she wouldn't have a little penis like a lot of people would think, she would be the kind of person that looks small but has a very good tool inside her pants, hers would not be the biggest one for sure, but next to her delicate body the eye test would result in an A+ for sure.
Io: she would surely have a small dick, that and his small and skinny body would make her like you're fucking a kid, more like those shota hentais or something (not a thing I know a lot about.
Uta: A normal-small dick, not the most exciting thing to see, but nothing to worry about if used properly.
Yumi and Toriko: They are god blessed, they would have the perfect penises of all, one that don't need to be the largest or the fattest but one that is simply perfect, one penis that when you see it you can't thing anything but that it looks so perfect, made by god himself, a glorious one.
Ami would have a similar one the Kirin's one, but not that big.
Molly would have a small one too.
I think Yasu has big penis aura too, I can see her excorcizing demons with her wiener, she would be an anal destroyer, im so proud of her.