In the Okinawa chapter, the Peek a Boo diving club hosted their own Otoori, an Okinawa drinking custom. In their variant, everyone adds the liquor of their choice to a pot, then everyone drinks from the same pot. The liquor that was added includes a hearty dose of classic Spirytus by the club members, and Awamori by Kouhei and Iori. More ridiculously, laboratory ethyl ethanol was added by the chemistry major student.