Shalltear - Magic Clothes

While Shalltear had been ignoring her, Dessert had been frantically stabbing her, cutting into her over and over. But what did she care? For Shalltear, who felt no pain, the woman’s actions were meaningless. The only issue was the holes being ripped in her clothing, but since the outfit was magical, the damage would repair automatically as long as Shalltear was all right.
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Volume 3, Chapter 2.4