A decade of deep love (Tasuku X Tsumugi)

(NOT MY ORIGINAL IDEA! CREDITS GO TO WU YI NING SI AND HER NOVEL "THE 10 YEARS I LOVED YOU THE MOST")
They've known each other since childhood and loved each other for nearly 15 years, they faced harsh remarks from their parents and the cold stares of others. Together, they left and started a career in acting in hopes of a better life but ever since Tasuku got accepted into the god troupe he began to change. Drinking, partying, and even sleeping around with others, the Tasuku that Tsumugi once loved was no longer there. Tsumugi falling ill with an incurable disease, he still chose to forgive and stay by Tasuku's side, but how much longer can the weakened Tsumugi go without love? Only time can test the strength of one's love.