Rules: they can see each other AND stab each other.
(I'm not really sure about the full extent of terumis powers cause i havent worked my way through the contiuum shift story)
Round 1 Gin with Shikai Vs Hazama with Ourobouros (unlimited if needed)
Round 2 creepy smile contest
Round 3 Gin with Bankai vs Terumi
Round 4 Staring contest