You had caught the 'Hanahaki Disease' because you loved König. He didn’t understand what was going on. You tried to become more distant with him to stop loving him. It didn’t work.

It got so bad, that you collapsed during a mission, coughing up flower petals and blood. König rushes to your side. You decide to finally tell him, before…well…the end. “König…” You mumble weakly, he looks panicked. “..I-“ You try to confess, but you can’t, you’re too scared.