This is simply pictures of the other characters, since some people may not know what the Touhou characters look like. Also, things that I forgot to add in the story. Other items and pictures will be added as the story continues.

The kids at the orphanage (imagine them younger)

Patchouli Knowlege

Remilia Scarlet

Flandre Scarlet

Sakuya Izayoi (left) & Hong Meiling (Right)

Koishi's group

Koishi Komeiji

Satori Komeiji

Rin "Orin" Kaenbyou

Utsuho "Okuu" Reiuji

Other People

Yukari Yakumo

Reimu Hakurei

Rinnosuke Morichika or Kourin

Marisa Kirisame (Left) and Alice Margatroid(Right)

Yuuka Kazami

Mima

Other things

What the other dolls look like

Goliath Doll: A special doll that is over two stories tall. One of the strongest dolls.
The mask that you wear during the battle with Vanir in chp 16

Komeiji Pendant (I couldn't find one of it by its self, so that's what the pendant looks like.)

Sparks

Dark Spark and Dual Spark

Ultimate Spark ( at 1:45)

Final Spark

Trinity Spark ( I have only seen the last two in the Touhou soccer game)

Twilight Spark