Furry Cavern

UL 21-1 (毛深き坑道) is the first stage in UL 21.

Battleground

 * Dark Emperor Nyandam spawns as the boss after 2 seconds.
 * After 3.3 seconds100f, infinite Trolly Bloggers spawn, delay 3~4 seconds.
 * After 10 seconds, 15 Wall Doges spawn, delay 10~13.3 seconds300~400f.
 * After 176.7 seconds5300f, 1 Ms. Sign spawns.
 * After 183.3 seconds5500f, 20 Assassin Bears spawn, delay 0.7~1.3 seconds20~40f.

Trivia

 * This is the second stage to have a 10000% Assassin Bear, the most magnified in thegame.

Reference

 * https://cdn.discordapp.com/attachments/603673188336926721/664403873963835402/unknown.png