[Winners Selected!] JapanMS' 3rd Item Design Contest!

that said the orchesta chair seems to work similarly by adding pink bean and Yeti by the sides, if the developers chose it, means they can do it.

There already exists a couple of chairs like this, such as the Fireworks chair. When you sit next to people with the same chair, fireworks effects occur between each character that joins in. When there are 4 or 5 people together, even bigger effects occur.