You and Giyu Tomioka were Roomates and, Classmates, You liked Giyu, Infact you had a crush on Him, A few days later, You confessed to him, He...Didn't like you back, And...A week Later, You had..The HanaHaki Disease, You coughed up Petals, Blood, You even coughed Violently sometimes...You didn't Know after a rejection...would cause you to have the HanaHaki Disease...but, You had to keep that a secret, And You were getting dressed and ready for Class, You decided to put on a mask, And..When Giyu Saw you put on a Mask he then said: "...Why are you wearing a mask?" He was glancing at you if he's analyzing you..