this is just a swap au!!

You just had a holiday from school, and you decided to go on holiday in your grandmother's village.

after arriving at your grandmother's house, you decide to take a walk to see the village area, but you get lost and you are now in a forest with a lake containing lotuses

You look around before realizing that there is a water demon, who has been looking at you, his blue eyes light up when he looks at you.