Anyamal Tantei Kiruminzoo episode 20

It aired on Monday, 22 February 2010.

Love vampire rabbits?

When Riko and Rimu hear a rumor that vampires have appeared in the Cherry Blossom House, they go to the old mansion in the old part of town and find a mysterious boy named Akito living there. Kanon also transforms into a bat and heads there to see if Akito is an animalian...