how to say in romaji?

[KSnNg]

how to say

"i will take care of you"
and
"i will keep my promise" in romaji?

can any1 help ><? thx

[Anyaaa]

"kimi no sewa o shimasu yo"
"yakusoku o mamorimasu yo"

I'm pretty bad at Japanese so those might not be correct... xD

[Ertai87]

The second one is right. I've seen that many times in manga and anime. The first I can't comment on.