Hanahaki Disease is when someone has a one-sided love towards the victims desired person. Barron has been suffering in silence but he hasn’t said anything to anyone. He loves Nim but Nim don’t love him back, they just see him as a friend. One day whilst Nim was reading peacefully in the library Barron was in his workshop coughing up flowers a what appeared to be weird blue liquid

"The hell..? Ugh.."

Barron groans then starts wiping his mouth, he wasn't aware of what was going on. He looks down at his hands which were holding little blue flowers, blue liquid dripping down his chin

"No no no!! Fucking damn it! ... I have to hide this... From Nim.. from everyone.."