Emma is the childhood friend of Lei, Ximen, Meizuo and daemoing Si. Daemoing Si are dating Sanhal. Sanhal's family is broke. Daemoing's mom dosnt like her. So his mom have been locking daemoing inside his room, not giving him food or water. So his friends and Emma comes

Daemoing Si 's mother: Emma, long time ago

Emma: give daemoing Si food