
How can someone's name be Uno...like the cards game The last chapter was so funny and cute (≧∀≦) I loved it!

Uno is a fairly common Japanese last name. It has nothing to do with card games or the Spanish word for "one", just like the Japanese last name Soma has nothing to do with a Finnish word for cute (also soma). There are multiple languages but a limited amount of sounds we can combine to make words. So it's not strange at all that words sound like different words from other languages.
I'm smelling Oomaeda x Hanawa ლ(´ڡ`ლ)