Ghost of Relativity(2015)

Ghost of Relativity is a Hong Kong romantic comedy series about Keung Yung, who harbors a decade-long crush on her co-worker Michael Chiu Wai Kan but lacks the courage to confess. When Yung is electrocuted by a faulty bootlegged phone during a late-night call with colleague Shun Suk Mui, she dies with her feelings still unspoken. Trapped as a ghost visible only to Suk Mui—the last person she spoke to—Yung enlists her reluctant friend's help to win Michael's heart from beyond the grave. What unfolds is a charming blend of supernatural hijinks and romantic mishaps as Yung attempts to bridge the gap between the living and the dead to finally pursue the connection she always wanted.