Okina Matara

Okina Matara is one of the sages of Gensokyo, she can create a backdoor in anything to act like a portal to, that way, she can also screw up the weather and the seasons, as she did once cause the seasons to go wild by putting backdoors in several locations in Gensokyo. She is often found in Land of Rear Doors, alongside her servants Satono Nishida and Mai Teireida.