Heize's New OST Finds Romance in Gratitude, Not Grand Gestures

After years together, perhaps the most important love song is simply a thank-you.

Melon and Bugs confirm the release. Bugs describes a reflective ballad built from piano, guitar and strings around Heize's voice.

Its focus on appreciation over first-date fireworks suits a drama about an established relationship.

The song, release date and linked audio are verified. We do not claim to have observed a universal listener response.

The official credits name Lee Gi-hwan and Eunrim as songwriters and composers. The embedded Topic upload is audio, not television footage.

'Filling My Heart' by Heize was released October 18, 2026 for the drama's fifth OST installment.

Specific appearances of the song within episodes should be checked against the broadcast.