The Orca Heiress Only Wants to Be the Villain

[Female Sentinel, male Guide, not gender-bender] [Everyone's favorite, doted-on heroine + competitive love rivals] [Mindless, sugary fluff]

After a massive outbreak of corruption, humanity's habitable territory shrank further.

An S-rank source of corruption appeared on the southeastern border, and Base D09, closest to it, was abandoned outright.

In their hour of need, civilians and nobles alike united like never before.

In the end, under the leadership of Base Commander Ling, the source of corruption was eliminated, and many people survived.

Unfortunately, the once-prosperous Ling family was reduced to its sole surviving descendant, Ling Xi, and from then on, Base D09 supported her.

After awakening as an F-rank Sentinel, Miss Ling developed a dissociative condition and discovered that she was the ultimate villainess in this Sentinel-Guide novel:

the love-addled aunt of the future darkened heroine, a classic case of a ferocious mother raising a spineless daughter, and a cowardly, wicked cannon-fodder character.

Her ending was to be marked by a blond Guide sent by the enemy, betray her base for love, come to her senses too late, mutate in a rampage, and be eliminated by the protagonists working together.

After waking up, the arrogant young whale heiress immediately unfollowed the handsome blond Guide she'd been secretly keeping tabs on.

She even went further, signing her niece, the heroine, up for a mountain of tutoring classes, and secretly vowed to play the wicked aunt to the hilt.

After all, holding back only makes you angrier, while going all in clears your head.

If she's going to die sooner or later, she might as well do whatever she wants!

Hold back her claws around the protagonists? Grovel and make herself small?

Not a chance!

Later, she discovered that

The scheming doctor who would one day fight his way back into the Alliance and overthrow the Empire smiled tenderly after she bit his neck and asked,