Not surprising considering the fact Mia is the perfect overused archetype of the childhood best friend in love with the main character trope. With the whole guilt trip thing and the sad puppies dog eyes if your MC dares to show the slighest sign of interest in other girls.
And of course
she had to be the sister of your current best bro ! For 2-3 episodes, the MC is completely oblivious to the obvious signals she sends him, despite the constant
love me/ fuck me eyes shenanigans. And yes, you've got the same tiresome flashback cliche showing the cute, precious and meaningful gift she gave you years ago and the whole universe makes you understand that you're nothing but a complete heartless monster, the Devil himself just because you're showing more interst in more attractive and less insecure characters. Icing on the cake she's probably a virgin still waiting for the prince charming despite the fact, the MC is more likely a stud and a horny dog.
I was bored before her first line. The guilt trip never works for me with that kind of cliche character. On the contrary, this motivates me to bang litteraly every others girls except her. I'd even jump on the Helene bomb just to piss her off.