Wth?? Not to also mention the very derogatory imagery of cats on the product... Women don't refer to themselves in such an insulting manner unless objectification is okay.
In the West, I've never once seen that or the use of a male (celebrity or not) on feminine products and rightfully so. Why? Because its something to be taken seriously not as a joke (or cost expensive for that matter).
The buisness approach to this is senseless because although he is a popular celebrity, OF ALL THINGS to put his face on it's for something serious in women's lives that he himself doesn't relate to as a man = he likely won't be a big enough determining factor to buy that specific product (like a lot of Knets mentioned). Another thing, no matter how popular he is there, not all women will even care for him or are even straight. Go figure.
Imo, this buisness move was senseless and sexist. Women's bodies shouldn't be put at the expense of not taking into account what really matters or generating more money (like it aready is currently).
Also, ironic how this is a thing in Korea where women's bodies + lives to an extent aren't already taken seriously/protected compared to their male counterparts.