Taking the squeaky marker noise into account, Tatsuta probably thought it was a rat. A really big rat.
Isonami, Uranami...Isonami... Uranami...It's 'cuz you're so weak, Akitsushima-neechan~Knave!That's rude, maybe!Just my imaginaaation?Okaaay!I wanted to go off to Europe too, maybe!Who were on the next expedition shift again?Tatsuta-san, what are you doing?
Let's go.Pretty sure it's...Just taking Nishikitaitei-chan with them is so mean, maybe!