What does Minato's teleportation kunai say?


So I've been wondering what Minato's teleportation kunai said, but I have
found nothing. I can only recognize the first and second characters. The first
one means Shinobi, and the second one means love. I can't understand the last
two.

So my question is if anyone knows what Minato's kunai say.

[![enter image description
here](https://i.stack.imgur.com/yIGbM.jpg)](https://i.stack.imgur.com/yIGbM.jpg)
[![enter image description
here](https://i.stack.imgur.com/KmJ8v.jpg)](https://i.stack.imgur.com/KmJ8v.jpg)




忍愛之剣 (にんあいのけん 又は しのびあいのけん)

Sword of Shinobi's Love

That image is not accurate. The person who drew the picture clearly didn't pay
much attention to the characters.

There is a YouTube video called "Did Naruto lose his six path sage mode" The
cover photo has these four characters

Also, if you google these 4 characters, you will see there were a lot of
people that have asked this question before

