Shoujo Grand Summoning

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The System responded much to Wu Yan’s glee.

Beep, Iron Sand upgraded to Grade C.

The iron sand in storage glowed brightly as blood vessels-esque line spread among the iron sand store in Gate of Babylon.

That’s the sign that the iron sand are enhanced by Knight of Owner.  A mysterious power caused the lines to beat like blood is coursing through them pumped by an invisible heart.
He can feel the iron sand growing stronger by the second.

Appearance-wise, not much changed, qualitatively, the iron-sand transformed drastically.
The lines faded away after breaking through an invisible threshold.

The lines are now darker and more prominent but it’s still not readily seen without a closer examination.

Another notification came after he upgraded his iron sand.

Beep, Gate of Babylon’s grade has been increased to Grade B

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“Grade B, at last…”

He released a sigh of relief, the tension he’s been feeling got replaced with joy.
He’s worried that System wouldn’t let him slip past that loophole but he made it so that’s that.

Now his Gate of Babylon is a bona fide Gold Armament.
He’s going to make full use of the Rare Armament grade Iron sand in his arsenal the next he gets a chance to display its power.

Of course, he can still upgrade another equipment.

“System, upgrade Nietono no Shana.”

He silently ordered System.

Beep, Nietono no Shana upgraded to Grade B.

Nietono no Shana got augmented by a mysterious force, appearance-wise, Nietono no Shana is a flimsy blade so there aren’t any major light show or sparks but the quality of Nietono no Shana is obviously better than before.
He can feel it just by running his finger along the blade.

Now that he has upgraded his weapon, he is stronger than ever before.