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Just learned that right now Garland is only a novel. No manga adaptation yet. But there is the first manga volume of Cuddle!!
IIRC jia only uploads the novel translations in their kofi page
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I just learned from another comment below that there's another Jujin Omegaverse called Garland: Jujin Omegaverse that's about Juda's parents Jill & Diego!! I have no idea where to find it though!