A Classroom in Ruins

UL 20-1 is the first stage in UL 20.

Battleground

 * Infinite Squire Rels and 100 Mooths spawn at the start of the battle, both delay 1~6 seconds.
 * On base hit, Squire Rel spawns as the boss after 0.07 seconds2f with:
 * 3 M. Osts, all after 0.07 seconds2f.
 * 25 Sir Rels, delay 0.3~2 seconds10~60f.
 * Infinite Sir Rels, delay 1~6 seconds.

Reference

 * https://cdn.discordapp.com/attachments/647391020455297034/649161858414018561/unknown-6.png