Messiah's 2d Musical Journey

Heavenly jealous of Yingcai, a musician Messiah who is known as a new star in the music world and a hope for the future, suffered an incurable disease before he started his glory.
When dying, unwilling to die, he traveled to a wonderful two-dimensional world and regained his new life.
Here, his sister is Tono Koban, his old friend is Mio Akiyama, his confidante is Yu Qi, and he also met nine cuties who just debuted, and a girl who likes him and is willing to do anything for him Son, Kazuma Toma, and of course the tangled Ayase Ayase, and...
Let me be brilliant here!
I come, I see, I conquer!