You can choose among about 20 different nigiri, priced between $1.50 and $3 apiece, and about 20 rolls at $2.50 to $6. Missing are the fantastic and pricey specialty rolls you find at so many of the hip sushi lounges catering more to a Western palate. The nigiri are well-constructed, with mildly sweet rice, excellent seafood and wasabi paste already incorporated into the bite. But soup lovers have reason to rejoice! Ajishin’s udon soup is extraordinary. There are also a few cold noodle dishes where the flavor of soba is better illustrated. Arashi, for instance, combines soba, grated yam, seaweed and green onion in a tangy dressing for a deep, almost smoky noodle salad. Open 11:30 a.m.-2:30 p.m. and 5 p.m.-9:30 p.m. Wednesday through Monday; closed Tuesdays.