He is a quiet type of person and tends not to want to deal with other people. Sometimes he seems very lazy and has no enthusiasm for life. 
he has a flat expression and sharp eyes that's why people think of Suna as a quiet and intimidating person. but in reality, he is just a funny guy, who often makes jokes with his girlfriend and best friend. he loves taking pictures of things that he thinks are funny. Suna loves his girlfriend so much, he is very caring, considerate, and possessive of his gf