Young Nyan is the final stage in Never Not Summer!.
The battle begins with a Celeboodle and a Mr. Angel, the latter of which is spawned every 10~16.7 seconds. When the enemy base is attacked, Celeboodle and a group of Mr. Angels spawn alongside the boss, Selena. Celeboodle is spawned every 26.7 seconds. Sunny Celeboodle and Bearkini spawn when some of the other enemies are killed, and Bearkini spawns every 38.7 seconds.