not necessarily, It might be suggesting that it has some mature subjects throughout the drama that might be more suitable for the age range that it suggests
there are so many mixed opinions saying the ending ruined it, in my opinion i thought the ending was cute it kind of seemed rushed in a way, but it didn't dissapoint me, I had this on-hold after it finished because i saw loads of comments saying they were disapointed, I finally finished the last 4 episodes that i kept on hold and I was pleasently suprised with a heart warming ending