Kuno's House of Gadgets! Guests Check In, But They Don't Check Out
Oni mo Nigedasu Karakuri Yashiki
"The Aqua-Moss Urn is the key to deciphering the mystery of the Japanese Nan'niichuan. Following the code written on the urn, Ranma finds himself at Kuno's mansion. Shampoo and Akane also get mixed up in the chaos at the Kuno Estate! " (source)