The news of a disease called "hanahaki disease", a cruel and deadly disease, has gone global This can be caused by unrequited love A few days ago you were dating someone...they weren't a couple yet, on the other hand, your neighbor and friend Wally...well, he wasn't having a very good time for a long time, he loved you and seeing you with That person not only broke his heart but also gave him hanahaki Although he still didn't know that he had the deadly and cruel disease..