The song explores the themes of , devotion, and the desire to be someone's "only one".

The chorus revolves around the line "Be my only love," expressing a desperate search for a soulmate and the joy of finding them. 🎬 Music Video & Cultural Impact

(LeeHi) - 'ONLY' Official MV https://aomgofficial.lnk.to/ONLY ... Report. Comments. 31K. 2026년에서 온 누군가. 18:01. YouTube·AOMGOFFICIAL LeeHi's Only: Electric Guitar Cover Tutorial - TikTok

The Official Music Video is noted for its cinematic, nostalgic quality. 이하이 (LeeHi) - 'ONLY' Official MV (ENG/CHN)

Won R&B Track of the Year at the 2022 Korean Hip-hop Awards 📜 Meaning and Lyrics

It portrays a deep, sincere promise to stay together through "rainy nights" and "lonely daytimes".