The Red Flower

Davante Fixsen, a young boy who has been forced to live in Albern's castle for years; was suddenly asked by Emmie to play a weird game with her. He only had to see the infamous red flower under the mysterious tree. But once he arrived under the tree, part of his memory was lost for some reason, and the red flower was nowhere under the tree. In order to be able to leave the academy and go back to to the castle, he has to find the red flower.

(Source: Webtoon)