From May 15th to August 31st, Shinjuku's Egg & Spuma Cafe will be hosting a Sanrio Characters Pop Up Cafe event, and it boasts a wide variety of adorably presented eats, drinks, and desserts on offer. Some of the options include a Hello Kitty themed burger, a Cinnamoroll fruit-topped crème brûlée, and Kiki and Lala sandwiches to name just a few. The full event menu and prices can be found in PDF format here (in Japanese).
The cafe hours are from 11 am until 8 pm (last orders at 7 pm), and seating is on a first come, first served basis.
The Egg & Spuma Cafe is located on the 8th floor of the Shinjuku Lumine complex. The venue is just a minute on foot from Shinjuku Station, which is served by various lines including the JR Yamanote Line, the Shonan-Shinjuku Line, and the Saikyo Line.
Alternatively, the cafe can be accessed within 7 minutes on foot from Exit B8 of Shinjuku Sanchome Station on the Tokyo Metro Fukutoshin Line and Toei Shinjuku Line.