Could just be me but I feel like Tsumiki was trying to get some time with just Yutaka. She was unfazed when they looked at the time, but after seeing Yutaka stress about wanting Tsumiki to see the fireworks with her friends she jumps in and saves the day.
I hope there's going to be another beach chapter where they're actually on the beach and not working in a restaurant.
Still an amazing chapter, thank you for your service