Boss Gauge: 2000 HP
The boss is an Akizuki-type Anti-Air Destroyer with EXTREMELY high armor values. Cut In setups are recommended on ships with high luck, but DA setups work fine on ships that support it well (Bismarck/Jintsuu/CAs)
It is possible to acquire a damage boost!
According to wikiwiki, it's thought to be, specifically, a critical damage increase above the normal 1.5x (highest credibility)
ONLY applies to the AD Hime by S RANKING certain nodes:
K & C -> Both unconfirmed, some think they are not useful
Y & X nodes are recommended at least ONCE while accumulating additional kills (adding up to 3 to 5 in total per node) seems to help.
Be reminded that this 'map mechanic' resets once per day at midnight(12:00AM) JST. (see countdown timer on sections above)
This mechanic appears to persist even when difficulty settings are changed.