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Arthurious mother who had not attended the arena was sitting inside of her room, she had been told by a butler that her son was fighting in the arena against Hectarious, but because she felt fearful to see her son getting beaten badly, she had doubted a lot about seeing him and his monster in action… However, at the end, he decided to see what he was doing, even if it was bad, as his mother, she couldn't help but feel very worried.
However, the moment she looked into the crystal ball that showed what was happening inside, her eyes opened wide. Blackie, the black goat that had been cursed and had a very weak physique, which was picked by her exclusively so he wouldn't grow and would end up not making her son participate was now… evolved, stronger than ever before, and fighting toe to toe against the might black wyvern of Hectarious, the most promising of all the grandchildren of the Emperor Navarre!
Check "The Protagnist's Sister Is Actually the Strongest"!