Trapped in Her Skin, Switched by Fate's Spin Ep. 4

Orphan Erin Bourn, consumed by jealousy, uses a mysterious candy to swap bodies with the privileged Sep Pena. Erin seizes Sep's life, reveling in her family, love, and opportunities, while the real Sep is unjustly declared insane and confined to a mental institution. As the deceitful heiress becomes ensnared in her own lies, Sep, armed with the trust and aid of her loyal friend, orchestrates a daring fight to reclaim her identity.