Is there a Japanese smile that does not seem like an expression of pain?

Japan.I love this country.The food,the tradition,the customs,people,everything is unique.I was inspired by this country and I printed a t-shirt at a local print shop.It's quite eccentric and it represent me at a way,as most of my friends call me 'japanesse girl' because of my eyes shape.I hope to visit Japan at the foreseeable future,but until then I just looking it at pictures.