Now starts the argument of what kind
of powertool did it...
I vote for Soldering Iron.
It was a time consuming accident
Suriko confirmed something...but just made it a bit harder for me to grasp or connect woth reality :/
Although, this does made me want to expand Miki's background a bit more.
Houses in Japan--whether if it is a 'house-house' or an apartment, it's very uncommon to own something 'big' like a powertools; we don't have big garages with tool racks. Too space-consuming.
But what if Miki's father is a mechanic and she lost her arm during her playful visit to his work place? That could be something.
Are you listing the routes or the characters themselves?
For me it would be like this:
Lilly > Rin > Hanako > Emi > Shizune
Lilly > Misha > Emi > Hanako > Rin > Shizune
I'm getting a general idea that if you like Shizune, you'd dislike Lilly and vice-versa. But Shizune's far from ugly and--sorry, boring? You know nothing of Shizune
Misha certainly is cute, but with her dying her hair pink and the drills to gain attention, she'd be getting less of a 'positive' attention from most, sadly.