Ichiran Shinjuku Chuo-Higashiguchi is a ramen restaurant in Shinjuku that serves tonkotsu ramen in a basement space on the first underground floor. Customers use an order sheet to choose noodle quantity, noodle firmness, richness, spiciness, garlic, green onion, and chashu. Arriving at 9:30 p.m. can mean a wait of about 50 minutes, and the basement has around 24 single counter seats. Waits run from 20 to 90 minutes during meal times and at night.