Koi Ramen Bangi is a Japanese ramen shop in the alleys of Bangi-dong, Jamsil, serving tonkotsu ramen and mazesoba. The rich, salty broth comes with thick chashu, a soft-boiled egg, and corn, and a spicy ramen is also available. Diners can grind whole garlic and sesame themselves, and after finishing the noodles they can add a bowl of rice for free. The space is small, mostly two-person and counter seats, so a wait forms at lunch.