Ryosuke is often cheerful and happy, and very carefree and friendly. He enjoys seeing pretty girls as much as all the other boys in their school (aside from Kawasumi), but he approaches them in a more friendly manner. He can be serious as well, such as when he discovered that Kawasumi liked Suiren. He told him that he could tell him anything, and that they were friends.

Here's his voice in jpn: https://youtu.be/sZaIc5kL3io?t=693