But . . . but ・・・・

I. . . I'm blood type O and . . .

You are B and both dad and Honoka are A . . .

Manaka, parents with blood types A and B can sometimes have children who are type O

You're lying !

I'm not! Miss, could you please come over her for a second?

Y-yes.

Yes, parents with blood type A and B can have children of any blood type - A, B, AB or 0