Lol no, you have to read it just as it is written, the only thing to consider is that the "w" is kinda pronounced like a "v", so something like "Yahvi"... That's not my knowledge tho, I just searched for the name in Korean and copied/pasted it on the translator to hear the pronunciation
omg yahwi sunbae..like yaoi sunbae?? is that how u pronounce yahwi..is bros name yaoi