Omgggg if you guys are in ktown check out this delicious dessert place called somi somi.
Fish shaped bread (like a soft cone) filled with custard, Nutella, or red bean and then filled with Milk, green tea or banana flavored ice cream. GAHHHHH so good.
My recommendation would be to get a cup with you fish. The ice cream melts pretty fast so if you want to slowly enjoy your treat, get a cup!