Translation by Suyooo on /r/SchoolIdolFestival on Reddit – https://old.reddit.com/r/SchoolIdolFestival/comments/ees7n1/sifas_4koma_was_that_a_pun_rumbling_and_swinging/ (includes next installment as well)

Edit – Also worth noting that according to Suyooo...

In "Was That A Pun?", Kanan says that everyone makes "minor mistakes" (ちょっとしたまちがい, chotto shita machigai). Ai takes the "Shitamachi" (下町) part, which is the part of Tokyo they visit in the event if I remember correctly?