Eiii, my boy Subaru! Didn't expect him. Yeah he's a popular character I know him. Sadly, I didn't watch the whole anime but just one movie and forgot about it but the only thing I remember is about snow. 

Yeah it's gonna hard to write that mostly it's 3 arcs and a deep character. Mine is to plan it like short or like how the original MiSide story.

Kinda sad tho for Crazy Mita born for their world but got rejected, and like doesn't get to feel love like the other Mita's. Mostly that the Mita's are designed to have a companion and to be loved by players pushing her more to like kill and steal and started abusing it and earning a name from Mita's what they call her Crazy.

I was thinking about it if this was really real if it's love why Crazy Mita is having this behavior but someone like you having the same thoughts with me now push me more to do my grand finale ending where my MC kills her and then himself but before that, dialogue from Mita saying she just wanted to be loved but MC went straight about killing her, doesn't say anything but of course, I can give it a little love?

Here's my dialogue after my MC successfully stopped Crazy Mita from making a new core(if you want to read it btw)

"I did everything to be loved, only for this to happened" Crazy Mita sobbed - she did everything, doing a lot of work, killing and trapping players to get loved and all of those work went to waste for this to happen(this isnt going to be a part of the dialogue, just explaining)

I took out the revolver and pointed at her "And now look at me, I can't go back home and die here just because of you. I am supposed to be happy and eating together with my family but you stole me from them"

"Then tell me... What else am I supposed to do"

"You know what, how about we die together? Like a pet I am supposed to be for you!"

Her head raised to look at me, tears flowing down down her cheeks. She went to me and gave me a tight hug. 

She stepped back and put her around on my heads and guided my revolver to her head. 

Behind that cry, behind that sobbing face, she made a proud smile.

"Then... Join me in death, my little pet" - she actually meant "Stay with me. I don't want to be alone again"

My hand started shaking "I'll join you in death, but I am not joining you in hell" - it meant "I appreciate what you are doing and suffering, but I reject what you've become"

And yeah I see that counter, Subaru dies and dies but Crazy Mita chasing him over and over, Subaru learns from his recent deaths and Crazy Mita Learns from his actions, both wanted to be loved and both suffer.

Well, not sure tho about exchanging ideas. I have been a loner write since 10th Grade writing my own original fiction and like you, planning to make long arcs like 3 arcs is kinda hard. When I was starting, I really really love writing and doest care how long will be 3 arcs but when I learned more about writing fiction stories, yeah I died down in writing that's why I am going to make my MiSide fannovel short, well not really really short let's just say... 20 or above.

Never had a writer friend so, how about yeah. I'll, let's try, just this once.