Heat Wave Blues

Heat Wave Blues is the third stage in Never Not Summer!.

Battleground
Trolly Blogger spawns at a fast rate, every 6.7 seconds. After 13.3 seconds, Heavenly Hippoes start spawning, and after 30 seconds, Selena appears as the boss, with Bearkini spawning 90 seconds later.

Reference

 * http://battlecats-db.com/stage/s01166.html