I took the lesson with teacher I today.

I'd heard she hadn't taken a blood test long ago, but I heard she had taken it recently.
So I was curious about her blood type, and I guessed.
Although she told me her blood type, it wasn't my expected answer.
I didn't decide to choose A or B; this A and B weren't blood types, just my choices.

She asked me why I thought about that.
I explained my opinion on the characteristics of differences in each blood type.
Throughout our long relationship, I thought her blood type was choice A or B, but the answer was my second choice.
After hearing that, I convinced; there was no doubt regarding her personality.

Regarding the personality of blood type, I remembered the news a long time ago about a famous Kabuki actor who was affected by blood cancer and received a bone marrow transplant.
Then he said that his blood type had changed.
I was curious if his personality had also changed.

According to the teacher's lesson review, if we know who is a compatible blood type with us in advance, we might get along with them.
On the other hand, people befriend blood types with good compatibility.
I agree with the second opinion.
In my experience, people I was attracted's blood type good compatibility.

At the company where I used to work, the interviewer asked about our blood types at the final interview when I took the entrance exam.
Recalling it now, it should be "blood-type harassment," I don't know if the words like that exist, though.