The Girls Fell in Love With His Songs, and Before Long They Fell in love With Him

Nagishiro Rin is a dull college student.
He looks like a yankee and is an otaku on the inside, and of course, he has zero experience in love.
He was actually writing love songs.
The lyrics are heartbreaking and bring sympathy to many women. Distinctive melodies that stay in your ears and replay in your brain.
When he uploaded such songs, he caught the attention of many people and ended up providing songs to everyone from full-fledged singers to the centers of successful idols and even actresses at the height of their popularity. And they are all extremely beautiful.
And even a beautiful girl who used to be a national idol and now retired.
His private life is being robbed more and more.
Then the usual Alienation at University
What will happen to his life?