In what year was the album “You Are My Spring OST Part 7” released by 온유 (ONEW)?

In what year was the album “You Are My Spring OST Part 7” released by 온유 (ONEW)?: The album “You Are My Spring OST Part 7” was released in 2021 by 온유 (ONEW), featuring 3 tracks.
What is the most successful song from the album “You Are My Spring OST Part 7” by 온유 (ONEW)?: “다정한 봄에게 Dear my spring” is the biggest hit from the album “You Are My Spring OST Part 7” by 온유 (ONEW).

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