A Joyful Song is the first stage in Depths of My Heart.
- Relic Doge spawns infinitely every 3~20 seconds.
- When the enemy base is damaged, Othom spawns as the boss alongside Maawth and Relic Doge.
- Maawth respawns once after 20 seconds, and Relic Doge respawns up to 9 times after 2~6 seconds each.
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