MegaMari: Marisa's Ambition - Eirin (New Commentary Version)
A genius of weird medicines.
I'm interested in her recipes.
Eirin's weak to Cirno's weapon, however don't think that just because you have one special weapon under your belt you're home free. All of the bunnies in her stage are A Pain In The Butt to beat with how bad they swarm you. That nad you always have to remember that you still need Ice Vulcan for the fight with Eirin so you have to use it sparingly. That aside you have a tough stage ahead of you but so long as you can make it to Eirin with full health you're golden. More importantly if you can beat this stage you're pretty much set for the rest of the 8 bosses.
6:49 - Boss - Eirin Yagokoro
Weapon: Black Lotus / Force Crisis
Weakness: Ice Vulcan / White Rose Cluster
Translations courtesy of the Touhou wiki