Souo Aguni is one of the participants of Gunpoint Roulette. A young soul with a tragic past, Souo tends to keep to himself and hide away as they always only had themselves to rely on. Being born in a family that was simply connected by blood, Souo learnt from a young age that they can only count on one person: on themselves. And, of course, their trusted pet frog Nellie. Silent, but observant. Some people might even say that they're an unpredictable person. They also happen to enjoy photography!