Elf Dominating App

MC transmigrated in another world. He helped the elves to kill the demon lord.

But what does he get?? Betrayal!!

Now he survive and got the system ' Elf Dominating App'.

Now he will corrupt and dominate the elfs and take his revenge.

First it is dark elf knight commander then busty queen and princess and many other.

This is revenge harem story.