I was wondering who Natsumi was. So i had went back and found she was not in the story much (kind of a background character).
She was introduced in Ch20, shown holding a map while the girls planned out the "Kick The Can" game in Ch21 and shown from legs down laying in a pool of blood in Ch23 after she was r'pd by that guy
@Remy88Lebeau
Oh, you're right! Thanks for searching. I was looking for Natsume too, but couldn't find her. At some point, I just totally forgot about her.
@AliceShiro
I had thought she was one of the of the original 12 girls when they talked about remembering her picking out those panties.
It is understandable you forgot because she had maybe 2 speaking lines and last panel you see her is in Ch21 Pg 19 running into a corner