There is in the Shinjuku Tourist Information.
You can get various guidebooks, maps,sightseeing information, free Wi-Fi, currency exchange and so on.
10:00am-7:00pm（Open all year except from December 29th to January 3rd）
◆ Discounts and tickets with regular price to the performances on that day
◆ Discounts and tickets with regular price to the performances on the next day
◆ Available genres: public performances, concerts, cultural experience, amusement facilities, art exhibitions, cinema, sports etc (some irregular ones available)
※Please check the display at the storefront regarding concrete lineup
※Cash cannot be accepted
3-37-2, Shinjuku Shinjuku-ku Tokyo
◆A One-minute walk from the Shinjuku Station South East Gate.
◆A two-minute walk from the Shinjuku-sanchome Station on Tokyo Metro Marunouchi Line, Fukutoshin Line and Toei Shinjuku Line.