ONIMAI: I'm Now Your Sister! (2023)

S1E12 Mahiro's Future as a Sister

During their spring break, Mahiro and the girls visit a traditional Japanese inn. They start their adventure by exploring the town while wearing yukata, enjoying the local sights and culture. The day takes a turn when they relax in the open-air bath intended for unwinding. However, Mahiro suddenly experiences an unexpected familiar tingling sensation, leading to an awkward situation that complicates their fun getaway.