Phantasy Star Portable 2:
The characters in this game are god awful. God Awful. I thought Sonic's partners were the all-time low for character personality produced by Sega but I was dead wrong.
The absolute pinnacle of this hideousness is, of course, the main character Emilia Percival. A character who spends a good 90% of the game complaining and moaning about her work, work which pretty much involves her tagging along while you do everything. Proceeds to throw no less than three hissy-fits over extremely petty misunderstandings (At least one of which was over a decision made in order to protect her from harm). During all of which you are pretty much forced into comforting her.
The only character that ever calls her on her BS is a Beast named Kraz (Who is also the source of her hissy-fits), which makes him the only character even vaguely likable through the entire story. Even then he ends up being apologetic for it in several heart-warming moments which will likely cause your body to reflexively attempt to kill itself rather than go on living with the suffering of having witnessed.
Even worse, if you want to get the good or best endings, you have to always support her, always. Not just on important things either, your ending can quite literally change because you decided to explain that her boss probably had a reason for sending her somewhere he presumed to be safe, rather than joining her in calling him a jerk. Yes, supporting uppity, high-school girl type pettiness rather than trying to look at it in a rational way is what earns you the Good ending.
Oh, and hey, you can unlock her in Valkyria Chronicles 2; because I remember thinking to myself.
"If only I had just a bit more time to spend with this character to make me completely suicidal instead of just mostly."