Kakiage is a kind of tempura which seafood and some vegetables are mixed in tempura batter, and deep-fried. In this photo, shrimp, carrot, onion, and Oba leaf are mixed. we usually dip it dipping sauce (tentsuyu) and eat. It is also good to top it on hot soba or udon.
Whether you are in a rush, or on a tight budget, or just craving some simple food, donburi is one way to go. Here are some suggestions around Tokyo for Japanese-style fast food.