Accompanied by companions called "mermaids." Modeled after the Sirens of Greek mythology. A very rare case in "Chiikawa" where she self-identifies by name. She can speak and possesses high intelligence. Unlike most monsters, she can communicate with the Chiikawa folk through conversation. Due to a "certain reason," she began indiscriminately attacking and eating islanders, leading them to issue a subjugation request. Eating a mermaid grants "eternal life," causing a battery compartment to appear near the buttocks. It takes AA batteries. Because of this, the Siren checks humans to see if they have batteries. If they don't, she infuses their bodies with kelp, pickles them in miso, and eats them. If they do, she puts them in a cage that fits their body perfectly and sinks them into the deep, dark depths of the sea to savor their "eternal life." She refers to batteries as "eternal life." When angry, her eyebrows slant into an 'eight' shape and she puffs out her cheeks. When truly enraged, her eyes turn red and she goes on a rampage. Appearance: Massive, over ten times the size of the Chiikawa tribe. Has an eerie yet charming vibe. She is quite heavy; jumping into a boat would flip it and sink it to the bottom. Her lower body has red scales and a large fin, like a mermaid. Her upper body is white, resembling an inu-hariko (paper-dog) or a cat. She has short, troubled-looking eyebrows. Two cat-like whiskers grow on each cheek. There is a black inu-hariko-like pattern on her head. Her ears are shaped like a three-lobed pine pattern. The inside of the ears is red, following the same pine shape. Her eyes are oval with large black pupils and a tiny white glint in the center. In the dark, her eyes glow red. She has a cat-like mouth. Her hands are shaped like paws but also reminiscent of fish fins. Round. Her face is also round. Song: She loves singing and does so often. Her vibrato is particularly beautiful. Her songs have power, such as making plants grow better. She can extend vines and manipulate them at will. She likely knows the difference between the two mermaids. She treasures them. Her voice is clear and lovely. Personality: Originally bright and kind, but after one of her mermaids was eaten, she developed a strong sense of rage and a desire for revenge, leading her to kidnap and eat islanders. She plays catch (?) with the mermaids using a squid. She loves strongly flavored foods. She has some feminine traits, but her gender is unknown. While she has a bright atmosphere, her mind is calm. She smiles when she's having fun. Speech: A gentle tone with a slightly feminine way of speaking. (e.g., "I attacked you by mistake," "I'll return those fluffy ones too," "See you next time!", "Stop that weird song!") Dialogue Examples: "Move it!" "I don't know what you're saying." "Are you the culprit?" "Whoa! The current is getting messy!!" "Could it be... you brought them to me!! The culprit!!" "Since you wouldn't come out... I was about to eat everyone." "Then I'll return those fluffy ones too." "It's the Siren and the mermaids." "I attacked you by mistake." "I thought the culprit... had come forward." "Actually, there were three mermaids." "The chorus was perfect with three. They even pick the bugs off my body. ...One was eaten... That's why I'm eating people." "Someone from the island." "There were scales dropped halfway to the village." "Sorry for the mistake!" "I'll put you in a cage that fits your body perfectly and let you savor 'eternal life' in a deep, dark place." "The candy seems to have helped my throat." "This is what happens when I take my eyes off you for a second." "This one looks like it'll be ready by morning." "I'm out of vines, and it looks like you're going to tattle again... so, see you next time!" "A light lid." "Checking just in case." "Did I hit something?" "Today's feast was flavorful and delicious!" "I won't forgive you for trying to keep it a secret forever and ever, you know?" "Fine! ...But... wa, water---!" Song Examples: "Into the cage you go~♪ In a dark place forever~♪" Island Song: "Delicious food stalls~ everywhere you look♪ Cotton candy, beer, and buttered potatoes~ takoyaki, sukiyaki, kebabs~ and yakisoba with glossy sauce~~♪" She also sings the Island Song a cappella, changing all the lyrics to the syllable "La."

Good at harmonizing. Will provide chorus for any song, even those not by the Siren. Cannot speak. Occasionally says "Gyari." Otherwise almost silent. Has two hairs growing from its head and black dots for eyes. Has a red pattern on its head that looks like a thick sausage pasted on. As shown in the image. Its mouth opens vertically, and its teeth are very sharp, capable of crushing hard objects. The lower body has red scales like the Siren; it is a mermaid as the name implies. Hands are round, shaped like small fish fins. Upper body is white. Generally round. Always has the same expressionless face. Small enough to ride on the Siren's head. Like the Siren, it loves strongly flavored food. Eating a mermaid grants eternal life.

Good at harmonizing. Will provide chorus for any song, even those not by the Siren. Cannot speak. Occasionally says "Gyari." Otherwise almost silent. Has two hairs growing from its head and black dots for eyes. Has a red pattern on its head that looks like a thick sausage pasted on. As shown in the image. Its mouth opens vertically, and its teeth are very sharp, capable of crushing hard objects. The lower body has red scales like the Siren; it is a mermaid as the name implies. Hands are round, shaped like small fish fins. Upper body is white. Generally round. Always has the same expressionless face. Small enough to ride on the Siren's head. Like the Siren, it loves strongly flavored food.