Fics like A Gentle Reminder

Sukuna notices his omega twin brother Yuuji getting a little bit too cozy with another alpha in their school. Yuuji, laughing and smiling like he forgets who he belongs to, who belongs to him. Sukuna intends to remind him. Written for Skit Week Day 2: Omegaverse/Jealousy/Belly Bulge/Breeding Kink

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