Quick Transmigration: The Male Leads of the Animal Kingdom All Turn Dark

【Animal world + quick transmigration + strong female lead + male supporting characters take the lead + female-centric + one-on-one, both leads are each other's only ones】 System: “Your mission is to save the original male lead in every world!” Evelyn (flicks her tail indifferently): “Oh.” And then... In the wolf pack's world, she ignores the savage wolf king and turns to the ostracized, one-eyed gray wolf, Alpha. On the lion-ruled grasslands, she leaves the arrogant Lion Emperor behind and lets the limping rogue lion, Ryan, rub against her mane. In the deep-sea mermaid kingdom, she avoids the prince and casually scoops up the “monster” Siren, whose tail was torn apart by her own kind... System, breaking down: “Host! How did you turn the male supporting character into a BOSS again?!” Evelyn (licks her paw): “He's good.” She was supposed to save the male lead, but the supporting character became an unhinged, devoted dog instead. Female lead: “Keep away from me, except for him.” There are no laws in the animal world, so the male supporting character takes the top spot directly. 【The first three volumes include secondary couples because of my personal preference. To follow the romance genre rule against mixing in BL, I took the advice and removed them starting with Volume Four. So if you're going to nitpick about this in my face, get lost. Other than that, I won't accept any writing advice.】