Step on the Demon Gate Witch to Become the Strongest

In my previous life, I was half a step short of playing chess and ultimately failed to reach the top.

Traveling back to the past, this time... I want to become the strongest in this world!

To become the strongest in this world, you only need three simple steps:

1. Picked up a demon girl who just traveled through time on the street.

2. Subdue demons and monsters.

3. Bring her cultivation techniques.

Yay! Already invincible!

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Many years later, Yan Yu, who had won the title of "the strongest", accepted an interview with a TV station:

Host: Who do you most want to thank for your success today?

Yan Yu: I want to thank a woman who is very important to me.

Host (eyes lighting up): Oh, is she your good wife?

Yan Yu: No, it’s just a stepping stone.

Host (wiping sweat): So... what about your other teammates? They should have helped you too, right?

Yan Yu: How could the long stairway to godhood have only one stepping stone?