The location is in the country of Singapore, there are two schools that compete with each other. I didn't really named those so let's call them as public and private. I'll tell you about where the character fits in later.
-Cahari Emas: Reincarnation of Brunei, a young girl born from a wealthy and influential Muslim family. She has a big sister that she feared in her childhood, her dad gave her more freedom than her big sister.
-Harrim Rani: Reincarnation of Malaysia: A up-tight and temper woman. She is from an elite school with Cahari and the student president. Have uptight parents that are lawyer and doctor.
-Joshua Dalion: Reincarnation of Philippines, an energetic young boy that works part-time as a barista in a local café. He supports himself even if his parent gives him money, he knows if he stopped working his little sister might drop out. He only got his little sister and his mother. Joshua father is a gambler they flee away from him. He receives an emotional scar or had an abusive childhood.
-Pearl Dokmaisao: Reincarnation of Laos. A young boy that works in his family flower shop.