Another Touhou Fangame Concept Of Mine (Magnificent Shapes Within Backdoors)

One day, strengthened fairies and mysterious youkai started invading Okina Matara's Land of the Backdoor for unknown reasons. This is the story of an incident not known by even the Hakurei Shrine Maiden...
Playable Characters:
-Mai Teireida and Satono Nishida: Ordered by Okina to find the leader of the invaders, the two set out to find the culprit.
Turns out, the invader may be a more important individual than these two can handle...

-Okina Matara: Deciding to investigate the origin of the invasion herself, she set out to find who dared to step foot in her Land of the Backdoor. Turns out, the invader may be of a more important character than she originally thought...

SateriCat17 said:

One day, strengthened fairies and mysterious youkai started invading Okina Matara's Land of the Backdoor for unknown reasons. This is the story of an incident not known by even the Hakurei Shrine Maiden...
Playable Characters:
-Mai Teireida and Satono Nishida: Ordered by Okina to find the leader of the invaders, the two set out to find the culprit.
Turns out, the invader may be a more important invader than these two can handle...

-Okina Matara: Deciding to investigate the origin of the invasion herself, she set out to find who dared to step foot in her Land of the Backdoor. Turns out, the invader may be of a more important character than she originally thought...

Click to expand...

Alright, so as evidenced by that premise, this would be a game about an invasion taking place within Okina's Land of the Backdoor.
Of course, this invader would be none other than another Sage of Gensokyo, with her ability being to manipulate and change the shapes of just about anything (similar to Yukari's ability to change the forms of certain things with her border manipulation, except with this girl's ability being specifically with shape and form).
Her reasons for invading Okina's Land of the Backdoor would probably be to raise her prestige amongst the Sages.
This game's premise is obviously somewhat simpler than the concepts I've made before, but I think it's still an interesting idea regardless.
I just wanted to make a game concept centered around Okina and her two servants.

Ah. Also, another thing to note is that I'd imagine the music of the game to be heavily inspired by HSiFS' music. I'd imagine it to have a very similar "surreal" feel like to that game's music as well.