Yeah. Can't make heads or tails of the desk label in front of Mutsu; nor what Tenryuu's saying. RIP.
Had to use Waifu2x, and even then, it's hard to discern some of it. The desk sign reads "迷子課" or "Lost Children Dept." Tenryu's line seems to be "マーケット海回でー", or "At/With a market sea turn" (a "sea turn" being a breeze or gale from the sea that often brings mist), but the term "海回" only seems to exist in Chinese, so that's probably not it.
nodIf we do that, we'll absolutely get praise from Tenryuu!Wha-Let's do it Yukikaze!nodnodSure!sloooowlyI know!
Let's complete the mission with just the two of us!