On April 13, Kichijoji beer pub P2B Haus announced one new keg on tap for the 16:00 to 19:30 slot. The beer introduced this time was Nara Brewing's 'UNDERWATER :LUMINOUS,' offered as a Sake Yeast Beer that follows the same 'UNDERWATER' series while retaining more malt character and shifting the flavor direction.

The tap list for the day featured 12 beers in total: Kampai's 'Kikuzaka Bitter,' 'Seirurizaka Helles,' and 'Ginnan-zaka,' P2B's 'CTO IPA,' Hop Kotan's 'Fiction,' Knot's 'NORA,' NOMCRAFT's 'Island Grove' and 'Punky Duck,' Kunitachi's 'Kabu,' and Nara Brewing's 'UNDERWATER,' 'UNDERWATER :LUMINOUS,' and 'WALTZ.'

The styles ranged widely, from English Ordinary Bitter and Munich Helles to American IPA, West Coast Pale Ale, Rye IPA, Okinawa Mango Ale, West Coast IPA, Hazy IPA, and Vienna-Style Lager, making for a lineup that covered everything from an easy-drinking pint to beers suited for comparative tasting. Trying 'UNDERWATER' and 'UNDERWATER :LUMINOUS' back to back makes the design differences within the same beer family especially easy to spot. P2B Haus is an easy-to-visit beer pub near Kichijoji Station, and it is also convenient for weekday evenings. The post noted that reservations were fully booked from 19:30 onward, so on days when you want a specific beer, it is safest to check early.