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Can anybody help me? I'm trying to find a shoujo romance one-shot about a girl who uses Vocaloid. She is really shy, so she doesn't tell others that she likes to compose songs, but this guy listens to them and starts crying as he hears it. She writes a song that says how she likes him and it is accidentally broadcasted throughout the school. If anybody could link me to it, that'd be great, or just tell me what it's called.

IT'S MY BIRTHDAY TODAY!!! September 30th!
Can anyone give me a nice manga to read? Completed and quite long please! Thank you!

Can someone help me find this manga?

It is about a girl who used to be a Yankee with a title called Red headed devil or something along those lines. She fell in love with a boy who she thinks is a good one but secretly he is part of a mafia family and he is also hiding this from her. They are both already couples but didn't know each other's secret. they went on a date and when he left her alone or awhile she encountered other Yankees who know who she used to be and while fighting the boy comes back to see the scene. He protects her from one guy who had a weapon and while shielding her, the Yankee cuts his shirt to reveal the mafia family name tattoo on this back I think....

Please help me find this manga? thanks for reading!