Feathered

This is the first stage of Mysterious Merc Storia chapter, which was added since the third Merc Storia collab.

Battleground

 * One Nono is spawned at 10 seconds300f and 53.3 seconds1600f marks.
 * Seresu respawns infinitely here at 80 seconds markrespawn rate: 600~800f.
 * When the enemy base health is 99% after 2 frames, it will spawn the boss and 3 Nonodelay: 10 seconds.

Reference

 * http://battlecats-db.com/stage/s2048.html