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"So you two became friends at the end? To think that we almost died to him back then…" sighed Frank, as he looked at Uehara with Matsuo.
"Friends? What are you talking about? I would never become friends with an asshole human like him!" said Uehara while crossing his arms.
"You're an awful liar, Uehara…" sighed Sakura.
Sakura and Uehara were here because they were invited by Sadako. She wanted them to grow a bit closer to Frank because he was the Clan Leader and the one they had to obey from now on.
Thanks to the fusion of the two clans into one, a lot of things needed to be done, one of them was clarifying the stand of the Monks and Onis, and that Sadako was no longer the leader of the Oni, but Frank.
Although Sadako was an influential figure in the family of Oni, Uehara was perhaps even more influential than her as she was even closer with the Oni and was influential as both a leader and a companion in battle.
Check "The Protagnist's Sister Is Actually the Strongest"!