Looks like u read the novel, can you give me spoiler abt juju
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[Spoiler]Juju is terminally ill, and it is Jupiter that caused her to be in this state. She and Jupiter are not related by blood. Jupiter was a soldier eliminating soldiers of the opposing nation by bombing villages, but her superior kept her in dark, they are not eliminating soldiers but normal civillians due to some reasons, in one of these attacks she discovered what she was actually doing and rushed in the village that got caught in her attack, she discovered Jupiter that was injured, and due to her injures her lifespan was reduced, Jupiter felt reaaaally guilty, she began to take care of the war orphaned children, that is why she is always in need of money, there are some other sad things that happened, but I won't spoil anymore.
P.s. Juju actually doesn't hate Jupiter [/spoiler]
Don't hate Junior, her attitude is not of the best, but she has her reasons.