Onjeong Tendong is a Japanese restaurant selling tendon near the Hongdae Station Yeonnam exit. Its tendon, including Onjeong Tendong and Special Tendong, is served by placing fried items over rice and adding a sous-vide egg. A single-person dining table sits by the window, and counter seats are available for solo diners. The store is small and cramped inside, so seating is not plentiful.