Oh, Those Hanazono Twins Vol. 6 (Kodansha, 2022)

""As a result of their hard work during the summer break, the “Brave Momo and the Dream Team” won the band contest at the school festival! Among the band's mountainous prizes was a hot spring trip voucher for two. Momo gave the ticket to them, and to keep up with their set-up relationship, Tatara and Ranko agreed to go. Although there's a rift between the two caused by an unexpected blunder from Ranko, will their first trip with delicious food and luxurious accommodations brings them closer?! Let's begin the hot spring trip arc overflowing with love!""