I can totally imagine Nanachi casually saying this to Reg while he's peeing, 100% knowing Reg is incredibly flustered and blushing and enjoying every second of it.
And then Riko's on Reg's other side casually watching and commenting too with a ":D" expression, except this time she's totally oblivious to how embarrassed Reg is getting. The poor boy just can't win!
I can totally imagine Nanachi casually saying this to Reg while he's peeing, 100% knowing Reg is inc