This is mostly walls of text explaining Yuka and Gundham when young, but there are cute drawings of them at the end lol. Also all the info about Gundham is mostly just informed guesses. All I know is his parents weren't great to him based on what he says in game. The rest is made up.
(Press space/ click for next image) uogh... Yundham.. Childhood friends to lovers doomed romance.. your going to die on an island after finally realizing you two love each other and have always been important for the other. Sorry abt that.