My Sister's Lover Is Mine

For 12 years, Elena has secretly loved her older sister, Serena. When Serena brings home her new lover, Vera, Elena deliberately gets close to Vera to make Serena jealous, unaware that Vera is a spy sent by the rival Valentine family. Meanwhile, Serena’s special assistant, Grace, clashes with Elena at every turn. As shocking secrets come to light, Elena discovers that Serena adopted her to protect her from their grandfather’s expulsion, and that Serena has secretly loved her for years. When Elena is shot while protecting Serena, the two finally confess their feelings on the brink of death and return home together.