Back with my promise

Mirai Celestine Angeles is a girl who lives in bataan but is forced by her parents to live in manila with them. She was only 7 years old that time. But little did she know that she made a promise to four boys that when she comes back, she will choose one of the four whom she'll marry. Matatandaan pa kaya nila ang pangakong ginawa nila 9 years ago? Sino kaya ang pipiliin ni Mirai?