This is flavored soju, which is usually around 10-12% abv and is sweetened. Very drinkable. Unflavored soju is a little less friendly if you don't like tasting alcohol.
I've never had the flavored ones, but not really. It's actually a very smooth drink. It's a neutral spirit made from sweet potato so it tastes kind of like vodka, but without the bite because it's half the alcohol content.