Where do you pray in Shinjuku? We will increase the prayers space.
As you know, you can pray in Takashimaya Department Store in Shinjuku and tax free shop LAOX. Add this spots, you can pray at PSF. PSF is the business school for university students. It takes 7minutes to go to PSF on your foot from JR Shinjuku Station West Exit. PSF is east of approach.
・Takashimaya
https://halalmedia.jp/archives/1343/prayer-room-takashiyama-shinjuku-store-available/