Of course, the evil mermaid Karla couldn't stay behind, especially because it is normal to target the weaker side in a group fight and with the first Karla now being a battle mage, even with the dark red trident she was the weak one now.
"Malicious Sea and Sky Union!", the process was inversed this time though, the evil mermaid Karla turned into a wave of black-red liquid which flowed towards the evil siren Karla and "drowned" her in it.
As a result, a Karla whose body radiated black-red water battle aura with black-green currents in it appeared on the battlefield, yup, you heard right, unlike the good now mermaid-siren Karla, who was a battle mage, the evil mermaid-siren Karla was a magic knight.
