Originally Posted by Hentai

Oh that was it huh. I thought that weird gate icon on the map had some special feature.

Looked up the wiki page for the maps after reading one of the above comments about the skillblooms. Are they random drops from the event maps? Or was that just during the past event? Getting a 5 star unit this easy is nice but a bit lackluster if no way to upgrade her without wasting crystals.

The Skill and Dress blooms were supposed to (randomly, 50% chance) drop from the last boss on maps ?-4 (skill blooms) and ?-8 (dress blooms) during this event. It worked during Phase 1, but completely bugged out during phase 2 due to pest nodes having 0 pests upon entering them. Made it very easy to three-medal the maps, but you wouldn't get any rewards. So the developers had to manually (or through some seperate script) mail the dress blooms every time you finished ?-8.

?-8 was a huge map, by the way, with several rng and switchnodes. Several units were guaranteed to run full circle before finishing.