Can't disagree with the last statement. Maybe that's why games on RPG maker can be so fun to play especially if the story is very interesting with good wibe.
About Koakuma. Actually I thought she always uses attack to destroy the whole team at turn 3-5, (I was too thrilled to actually think of not using mass spell card(or maybe I am "a bit" stubborn)), luckily there are 2 items that give possibilities to prevent death, so it is possible though.
Wonderful game that have already taken 2 whole days for me to play and unlock one ending. It is the best Touhou game I played for now at least. I'd like to admit that there are even interactions for actions that may happen in your playthrough.
For example if you use spell card on Reimu she'll admit it was a good hit (Nevertheless, in this spesific battle you can stun her(that will make her forget to use focus to evade all you attacks after the 1 turn) and even freeze after(but she can't be defeated even if her hp is 0 th though). It would definately be impossible according to the plot to defeat Reimu, but I'd like to see a goofy dialoge after a bird and 2 fairies could defeat Hakurei Shrine meiden before Tokiko got plot buffs) :)
