Chains of Heaven ! and Magical Girl Levi-chan !

**Chains of Heaven (Enhanced): An upgraded version of the Chains of Heaven based on Gilgamesh's weapon. It grows with the user and can at minimum restrain high-level devils, with a maximum capacity in the hundreds.**

"Stealing someone's sister and then saying such things! How annoying, meow!?"

Kuroka bared her sharp teeth, signaling her aggressive intent.

But as a sorceress, she was at a disadvantage against Su Yang. Direct combat wasn't her strong suit.

Actually... in physical combat, Su Yang wouldn't stand a chance against Kuroka unless he exhausted himself. Her physical strength was on par with high-level devils.

Chains of Heaven might restrain her, but Su Yang had no intention of using it.

Because... it wasn't necessary!

As they faced off, a high-pitched voice rang from the sky!

"Milmil~~~milmil~~~final~~~"

"Attacking my sister's friends is unforgivable! Levi-chan will eliminate you in Sona-chan's name!"

As Su Yang expected, she stepped in.

Protecting her sister and loving her was her biggest trait. Su Yang had sensed this Demon Lord's presence as soon as Serafall approached.

"Magical Girl Leviathan is here! To bring divine punishment to the rogue devil cat and the disobedient wild animal~~"

Su Yang looked up to see a girl in pink Magical Girl Levi cosplay descending from the sky, her black twin tails fluttering, her legs wrapped in red and black stockings.

Most notably... a terrifying ice spell was forming on her star-shaped wand!

"...Pink..."

"Hiss~"

Su Yang inhaled sharply, feeling a cat's light bite and scratch on his back.

"Shirone, I meant your eyes, not your panties~~"

Su Yang knew it was Shirone biting him and quickly corrected himself.

Yes, he meant her eyes, not her panties, though... he could see those too.

"Gulp~"

Bikou gulped as he saw the Demon Lord girl. If he wasn't mistaken, she was Serafall Leviathan, one of the current Four Great Demon Lords of the Underworld, and a top-tier expert even among Demon Lords!

"Big sister, please don't use too much power. If you swing your magic wand, a small country might disappear. Just capture them."

A familiar voice sounded beside Su Yang.

It was Sona Sitri, the current Student Council President of Kuoh Academy and the next head of the Sitri family.

"Since it's Sona-chan's request, Levi-chan will oblige! Let's defeat these wild troublemakers with the brilliance of magic!"

Serafall seemed delighted, finding it rare to legally use her powers on such a fitting "toy."

"Tch! Bikou, time to retreat."

Facing a Demon Lord's magic, Kuroka stayed calm and signaled to Bikou.

"Got it! Facing a Demon Lord, retreating is our only option. We'll deal with your sister later!"

Bikou agreed. Getting caught by a Demon Lord and having to be rescued by his old man was too embarrassing.

"No way! Levi-chan won't let you escape, or Sona-chan will be mad~~"

Serafall's pink eyes sparkled with excitement. Magical Girl Levi-chan wouldn't allow evil to exist!

"Heh, one thing we excel at is escaping."

Bikou smiled and exchanged a glance with Kuroka.

Not just within the Bible's pantheon, but in various other pantheons, they had caused trouble and mastered the art of escape.

"Escape mode, activate!"

Kuroka conjured numerous escape-specific magic arrays.

Su Yang didn't intend to stop them.

For one, he was low on spiritual power. His initial plan, if Serafall hadn't arrived, was to teleport to the Underworld.

On the other hand, he wasn't keen on seeing Kuroka and Bikou get captured either.

---

"President, thank you for your help."

As Serafall happily played, Su Yang thanked Sona.

"Su Yang, no need to thank me. I came looking for you today anyway."

Sona adjusted her glasses, her gaze drifting to Shirone behind Su Yang.

[Even if it's inevitable, their behavior is way too intimate...] Sona thought. If Shirone weren't in such a bad state, she'd definitely separate her from Su Yang.

"But first, I want to know: have you awakened some hero's power, Su Yang?"

Sona asked seriously. She had seen Su Yang's immense power earlier; those golden weapons were strong enough to seriously harm her.

If Su Yang had such power, why hadn't he shown it before? Was it awakened in a moment of crisis?

"Yes, sort of. Memories surfaced with the power's awakening, like the existence of devils and gods."

Su Yang nodded. This explanation provided a good cover for his identity.

Because saying he obtained power from a deity not of this world would definitely attract unwanted attention. Claiming it as a hero's lineage was more acceptable.

"Maybe it was because of that terrifying event today. After the sky cleared, I felt something new in my mind."

"I see."

Sona nodded. It made sense and was hard to argue against.

"Koneko, I'll take you to Rias now. Su Yang and I have some important matters to discuss, and you need further treatment."

She had originally planned to make Su Yang a powerful sorcerer using Ajuka's calculations, even if he didn't have special powers.

Now, with his awakened power and Ajuka's techniques, he would be even stronger!

After all, returning what she got from Ajuka was not feasible.

"Yes, I don't know any healing spells."

Su Yang reluctantly placed Shirone into Sona's teleportation array.

"Senpai... see you tomorrow."

Shirone murmured, feeling the need to explain something to her senior.

"Yes, take care and heal well."

Su Yang smiled, noticing her twitching cat tail, sensing her unease and reluctance.

The emblem of the Sitri family flashed, and Shirone disappeared within the teleportation array.

"Oh, Su Yang, this is for you."

Sona handed him a transparent crystal ball, something she had just traded from the Demon King.

It contained a wealth of magical knowledge!

Simplified magic array construction, thought chanting methods, magical energy circulation—all were Ajuka's personal insights.

According to Ajuka, this knowledge could take an average person to the level of a high-ranking devil, and those with strong comprehension and calculation abilities could even reach Demon Lord levels!

"This is..."

Su Yang genuinely didn't know what it contained because of the numerous protective runes.

The protection on these runes was more profound than the information inside!

Even with his "Black Heaven" power and Alpha Stigma, he could barely understand it.

"Ah! Sona-chan, why did you give that away?!"

The Demon Lord girl descended, pouting as she snuggled up to Sona.

"Wait, did you let them escape, sister?"

Seeing Su Yang's expression change, Sona pinched her sister's cheek, frustrated.

"Ah~ they were a bit slippery, but... do you like this twist, Sona-chan? I don't mind at all~ In fact, I quite enjoy it~~"

Serafall smiled, even while Sona pinched her cheek.