>>280193629
Here's that crossover illustration. And here's a chunk from the interview:

"Arakawa: I love drawing a variety of things...I loved drawings of yokai and animals. I also copied Ranma (Ranma Saotome, the main character in Ranma 1/2) a lot. He may be the prototype of the humans characters I draw now actually. Until then, I had drawn only animals. Anyway, I'm just so thrilled to meet you.

Takahashi: Thank you very much. I first encountered Arakawa-san's work through the Fullmetal Alchemist anime. My assistant was a big fan of it. She gave me a lecture about how great it was. And when I read the manga, I thought, "Wow! I don't know what to say." It was very logical. I don't feel like I'm getting drunk on it. I mean, I think there are times when you become so absorbed in a work that you lose sight of the world around you, but that wasn't the case. You don't have that problem.

Arakawa: Hmmm. I wonder.

Takahashi: But, you know, I thought this was really great. The series was always steady and stable, but it was also very passionate, wasn't it? It has been a long time since I have seen such a well-balanced manga. I was a little surprised.

Arakawa: You're too kind.

Takahashi: I said, "This is the real thing, right here!"

Arakawa: I won't be able to sleep tonight! No, but you really don't know what a manga will become until you put it out there.

Takahashi: But to have your first serial publication at that level... it's amazing.
[Interviewer:] Takahashi-sensei, You also had hits from the beginning, didn't you?
Takahashi: No, no, no, that was a different era. Why are you so good at drawing, Arakawa-san?

Arakawa: Eh, no, no. No, Takahashi-sensei is better.

Takahashi: How did you become so good?"

Very humble people. Takahashi acknowledges it was a different era.