My Dad, the Demon King, Is a Big Problem - Chapter 122

As a wandering soul trapped in endless cycles of reincarnations, Claus must decide what to do in his current life.

It is eight or nine years for her to meet her first love again. In the gas station of highway, she sees him walking from the grocery store. She looks at him, not believing what she sees and asks, ‘Do you still remember me?’ He looks at her, with a bottle of mineral water in his hand, and says peacefully, ‘Yes, even if you became ashes.

- Description from Novelupdates

The young lord of a small and weak country saves a dragon beside the sea one day.