Lonely Rock, Liang is my fiancée

Reborn in an island country, Ito Rin only wants to go to school and make money through her own efforts and talent, become an excellent and well-paid doctor after graduation, and live a new life steadily.
But on the road ahead, there will always be all kinds of people who disturb his progress and cause his life to change drastically.
His eccentric cousin Ryo Yamada, the gentle beauty Ichichi Nijika from the same school, the socially anxious Goto Ichiri, and the unreliable junior Kita Ikuyo, all pull him out of his ordinary life and into the excitement of rock and roll again.
"Rin-chan, accept reality."

"Ito-san, please help me."
"Senior, don't be tempted by me, I will snatch you away from me."
"Ah... Why is there still a line for me? For the sake of world stability, Ito-kun, please date me!"