Bl both died and got cancer. They chose to break up in order not to get involved with Shou. Shou's family of origin had been depressed for a long time. Now he couldn't accept it and committed suicide. They both died on the same day.
Sunshine cancer attack x depression disguised attack
The sun rises, the wind blows, and the soul dissipates.
My whole life appears before my eyes, and I am alive at this moment.
Intention: Everyone left him even though he didn't do anything.