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As Tomi comes down the ramp at 23:13 she is holding a blue bottle.
Then at 23:18 Haruna comes down the ramp and says "Tomo" whilst hiding the blue bottle behind her back... What's going on there?
Perhaps some cheeky Saké?
I'd say product placement, but there's not a clear label on it, it just looks like a generic flask to me.
Maybe it's the secret ingredient that gives them their super powers?
***ANSWER: It's Pocari Sweat, the Japanese equivalent of Gatorade/Powerade.***