Allow me to introduce my favorite character in Trillion: God of Destruction.

 

Her name is Elma, and she's the devil's little sister. She's been so sick all her life that she's never left the castle. On the surface, she seems like the most irrepressibly optimistic character, but watching the deaths of those who fight Trillion throws her into greater and greater despair. She wants to be well enough to fight or train or do anything to help, and she's afraid that she's nothing but a burden.

It takes two separate artifacts and a truckload of magical energy to make her playable. Even then, she never loses the IV bag, and she starts her training from a point of weakness and inexperience. But even defeat and failure brings a smile to her face, because she's finally strong enough to try. To grow. To be the Underworld's shining light, and bring happiness to its people, just as so many people brought happiness to her.

Her ending involves proposing marriage to her brother, because Compile Heart hates you and will destroy everything you love.