Stars in the Sewers

UL 21-4 (星々を映す地下水) is the fourth stage in UL 21. This stage is a remake of Pigpen Taboo.

Battleground

 * At the start of the battle, infinite Doges, 10 Snaches, and 10 Hippoes spawn, delay 0.7~220~60f, 0.7~220~60f, and 2~20 seconds.
 * After 10 seconds, 1 Kang Roo spawns.
 * On base hit, Snache spawns as the boss with:
 * 1 Croakley.
 * 1 Dober P.D.
 * 5 Kang Roos, delay 20~30 seconds.
 * 1 R. Ost.

Reference

 * https://cdn.discordapp.com/attachments/603673188336926721/664404558734426112/unknown.png