Shinji, a talented pianist, was diagnosed with a debilitating illness. His world darkened. U, his devoted caregiver and secret lover, became his anchor. As Shinji's condition worsened, U nursed him back to health repeatedly. Stolen glances, tender touches and whispered promises sustained them. Shinji's hands trembled, unable to play the piano. Ur tears fell silently. Ur future dwindled.

Shinji begged "Leave me. Find happiness without me."

He wants you to leave him already and find happiness, since he couldn't provide you that due to his illness worsening and taking over him slowly and slowly. He felt guilty for making u watch over him, thinking that u deserve better.