Rule Of Rose Walkthrough Part 6: Mermaid Princess (Mermaid Princess Boss Fight)

Jennifer finds herself back in the room with the mysterious boy who, aware that Jennifer is slowly remembering her past promise, urges her to read the last of three books laid out in front of her with this one being entitled "Mermaid Princess" and also having its final page missing. As she reads, Jennifer finds herself back aboard the airship, ending up in the room with an aquarium that is supposed to be housing a pet fish belonging to Mr. Hoffman, who is inexplicably alive despite having been fought and apparently killed by Jennifer earlier. Having been left in charge of taking care of the fish and cleaning its aquarium, Diana grows restless, aware that she will likely be blamed for the fish's disappearance. Heading out, Jennifer finds out that the newest offering required by Red Crayon Aristocrat Club is an "Unmarried Mermaid" and eventually finds Meg and Eleanor, discovering that the two resorted to desperate measures to make an offering to the club due to none of the orpahans being sure of how to present a mythological creature such as mermaid to the club. As they leave, Jennifer finds a discarded fish scale, implying that the desperate measures likely involved Hoffman's pet fish in some way. As she continues to make her way through the airship's upper levels, Jennifer finds the discarded fish head and lower half of a doll, implying that Meg and Eleanor killed Hoffman's fish and used it to create a crude mermaid-looking doll out of doll's upper half and fish's lower half. Jennifer also sees Hoffman leading one of the older orpahans named Clara somewhere and, upon following them, tracks them to a room signposted as "Mermaid's room". Upon entering it, Jennifer doesn't find Hoffman but is met with a horrifying sight; Grotesque, stitched up monster physically resembling Clara bound to the room's ceiling by a pulley system whose ropes are bound around the monster's legs to resemble a mermaid's tail, giving it an appearance of a monstrous mermaid. With Jennifer ending up locked into the room with the monster, she is forced to fight for her life and is eventually able to kill it. As she does, monster's corpse turns into a doll-fish hybrid created by Meg and Eleanor and the room transforms into the room with the aquariun where Jennifer first ended up. Within the room, Jennifer sees Hoffman interrogating tearful Diana about his missing pet fish and grows incresingly physically touchy with her, with his behavior implying that he may have sexually abused both Diana and Clara. With Diana continuing to cry, Hoffman gives up and walks out of the room with Diana managing to compose herself after he leaves and showing an open disgust for the way he touched her before noticing that Jennifer is also in the room and had witnessed everything. Noticing the doll with half of the fish on it in Jennifer's hands, Diana becomes enraged, believing that Jennifer stole and killed the fish while leaving Diana to bear the brunt of Hoffman's rage for the fish's disappearance. After angrily snatching the mermaid doll out of Jennifer's hands, she throws it into the aquarium before advancing on Jennifer and physically attacking her. Awakening some time later, Jennifer collects the mermaid doll out of the aquarium and finds it torn in half, with the slip of paper being stuffed into its upper half. Upon collecting it, Jennifer discovers that it is the final page of "Mermaid Princess" story simply reading "I am yours, even in death" with the sentence causing Jennifer to recall the final part of her promise stating "I am yours", giving the full promise which states "Everlasting true love, i am yours"...