Seems to be p1-21, p34-37, then p23-33. Miraculously activating damage fairy but lost her memories. Or considering the white pages p23-33 were last minute fantasies and she did sink.
Kongou was in a relationship with her captain. While on a mission Hiei gets badly damaged/sunk and she and her captain hide on an island (with sexy times!). Kongou, hearing of her little sisters plight wants to go out on a rescue mission. During the fight she basically throws her love interest overboard to save him (Hiei and her hubby got saved already). She then takes a bad hit and had a flashback on how she cheated on her love interest (?) and after that she takes down the enemy before sinking herself?
So many KC doujins, but so few translators (realy can't blame them, it's something you do in your free time, translating isn't easy and the sheer ammount that gets uploaded is impossible to tackle).