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After the incident with the Realm of Aztlan, Kireina quickly gave away the entire Realm to Gaia, using her wondrous abilities to manipulate space to make the entire Realm into the size of a pebble and then put it inside a small pill, which Gaia consumed alongside some water!
The entire Realm and the Gods on it, of course, saw it very differently, feeling shocked that such a thing had happened… they saw how an entire Realm disappeared out of thin air, feeling completely terrified by the might that Supreme Gods held.
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