It was ten at night. Near Shidami High School in the seventh district of Academy City.

Lin Luo slumped on a park bench, wireless console clutched in his hand... Borrowed from Haruka's twin-tailed friend, it could monitor all surveillance cameras around here. The alarm would sound instantly when that twin-tailed girl appeared, giving him precious chances to catch her.

A vague guess had already formed in Lin Luo's mind... That twin-tailed girl might be the host of World Heart - his second potential contractee. In other words, a future member of his crystal palace.

Long ago Liu Ziwen once mentioned that Contract Book could attract World Heart through its attributes. The strange yet familiar connection between them... If she wasn't the World Heart's host, Lin Luo really couldn't believe it.

Still, whether this twin-tailed girl would actually appear remained uncertain. After triggering an alarm during daytime, a cautious person wouldn't risk coming again...

"Beep-beep-beep..." The wireless console suddenly erupted with alarms.

"Oh my god!" Was her IQ really that low? Lin Luo nearly dropped the device in shock.

Hurriedly checking information on screen, he found the alarm location nearby - within five minutes' sprint. Without hesitation, Lin Luo dashed toward target coordinates, heart pounding with both excitement and anxiety... Excitement over meeting his second harem member, anxiety about this seemingly brainless girl.

But then again, if she was indeed a natural-born airhead, wouldn't that make her easier to court?

Several minutes later he arrived at the alarm site - a secluded alley. Honestly, Lin Luo couldn't grasp why surveillance cameras were installed in such remote places. Was Academy City's budget really overflowing? Or was this some kind of pervert's lair?

Whatever reasons existed, they no longer mattered as nobody stood there now. Scanning left and right revealed nothing useful.

"Guess I should have set up a stakeout instead? After two consecutive alarms, even the most brainless person wouldn't come back..."

His thoughts were interrupted by another "beep-beep-beep". Lin Luo's eyes nearly rolled to his back: Twin-tailed girl, you are really something!

Rushing toward new alarm location only led to another dead end. Soon that familiar warning sound echoed again...

The following events took a dramatic turn. Every time Lin Luo arrived at an alarmed spot empty-handed, the console would immediately blare anew. It felt like someone was deliberately leading him on a merry chase through alleys. After repeating this dance seven or eight times, he couldn't tell if she was genuinely clueless or setting up bait.

Still, no matter which scenario it was, he wouldn't give up now. This second potential World Heart host had already lured him in - even if it proved to be an ambush, he'd have to bite the hook!

Around the twelfth alarm, Lin Luo finally spotted his mysterious twin-tailed target at alley mouth. Unlike daytime when she first triggered alarms, she now wore a loose cloak covering her entire body.

When their eyes met, she jumped like startled prey and vanished into nearby alleys.

Of course Lin Luo wouldn't let her escape! Entering fusion state immediately, he gave chase.

Though the cloak made her silhouette bulky, his godlike vision easily discerned the slim figure underneath - plus twin-tails!

Lin Luo's anticipation grew. The Contract Book could check World Heart hosts' status but required confirmed identity first. Without knowing her name, even if she truly hosted a World Heart, he couldn't retrieve data.

"Please stop running! I'm not your enemy. Let's talk - if you have problems, I'll definitely help..."

He called out while pursuing, but she paid no heed at all. "I swear by my honor it's true!"

"Could you please halt for a moment?"

"Hey, listen to me..."

Lin Luo felt absurdly frustrated. He'd wasted precious words while she treated him like air, fleeing faster and faster as if dodging plague. Meanwhile his wireless console kept beeping erratically...

It finally dawned on Lin Luo: This wasn't intentional baiting! Her extreme caution and speed weren't signs of natural stupidity but panic from surveillance cameras - a complete stranger to such technology.

Through labyrinthine alleys, the chase continued endlessly until twin-tailed girl reached her limit. Not because she wanted to stop, but because a wall blocked further escape!

"Now we can finally talk," Lin Luo declared, standing ten meters behind with alley's only exit sealed off. His smirk showed satisfaction.

But his expression shifted instantly when instead of calm dialogue, she spun around lightning-fast and fired something black from her hand - like bullet striking his chest!

Lin Luo sidestepped at LV4 reaction speed (five to six times normal), yet the projectile still grazed his skin...

"Crack!"

Like a bullet piercing wall, Lin Luo instinctively turned. Behind him appeared a thumb-sized hole in concrete.

Even this normally composed man broke out cold sweat - damn, how ruthless was this girl!

"I mean no harm! Let's reason calmly," he hurriedly pleaded. Despite his overwhelming power advantage, if she truly hosted World Heart, accidental injury during combat might trigger enmity... He wanted romance, not forced conquest!

"Hmph! No words for people like you!" The girl finally spoke - a crisp energetic voice oddly familiar to Lin Luo, though anger still colored her tone.

"Four-Style Annihilation!"

Her head lifting revealed multiple black energy balls firing from fingers...

"Crap!" Lin Luo cursed under breath. This time he'd prepared better and dodged easily with enhanced reflexes.

Yet confusion remained - when had they angered this girl? "You people" certainly didn't refer to him personally... And what was Four-Style Annihilation? That name seemed familiar too.

"Fast reactions, how about this..."

BZZZ...

Her hand formed pistol shape as dozens of black energy balls erupted like shotgun shells from fingertips!

Lin Luo recoiled immediately, casting defensive grid but...

Electricity Ineffective?!

Watching energy balls pierce his grid, Lin Luo's mind exploded. What power could completely nullify his superhuman abilities?

No more complacency now! LV4 power fully activated with bioelectric current pushed to maximum, he blurred past her vision.

"Screech!"

Tearing off cloak revealed the girl's true form... At that instant, Lin Luo froze mid-air like seeing ghost. His expression could only be described as witnessing miracle.

The girl was about seventeen-eighteen years old with impossibly beautiful features. Her jet-black hair cascaded into two twin tails dancing behind shoulders. She wore crimson long robe bearing white cross at collar, paired with black pleated skirt and thigh-high black stockings ending in round-toed boots. Most eye-catching was the glittering ruby pendant around her neck.

Standing 160cm tall (not particularly tall but perfectly proportioned), she radiated elegant noble aura with endless charm - a flawless beauty if not for...

Yet what truly stunned Lin Luo wasn't her appearance, but rather... He knew this girl intimately. Or to be precise, he should've recognized her immediately because she was...

"Rin Tohsaka!?"

"You... you know me?!"

The attacking girl abruptly froze mid-motion. Her expression now rivaled his shock - like runaway child suddenly finding family in dead end alley, mixing excitement, surprise and complex emotions.

"Ding! Identity confirmed. Target: Rin Tohsaka, 11th World Heart - Charisma Host."

Meanwhile the Contract Book finally spoke after long silence.