Came here with my wife for a nice hot lunch on a rainy day. We had tried their tonkatsu lunch, which was wonderful. Today, we wanted to try their ramen, so my wife ordered the miso ramen and I got the tonkotsu ramen. We tried each other's ramen and both styles were very good. Quite a difference from Hakata-style ramen, but both were very good. I would come back in a great beat and order either one again

Ramen has always hit the spot, especially during the colder seasons. So I decided to try something new for once and venture out with the Yuzu Tonkotsu Ramen. If you are expecting it to be spicy, you will be disappointed and I would grab the Spicy Tonkotsu Ramen instead. However, don't let it entirely trick you. Somehow, all the peppers were hiding under the broth for me so I tasted all the spice halfway while eating this. Still not insanely spicy or my tolerance is just messed up idk. I did enjoy the yuzu taste which I never had within ramen before. It had a nice touch alongside a peppery broth. That may or may not be a hit or miss for some, but I started choking midway from all the little pepper pieces. In all honestly, maybe the pepper was a bit too much and may have overshadowed the entire taste of the broth. Service was amazing and she checked up multiple times and refilled my water quickly cause I just love drinking so much mm water. She was able to offer me recommendations when I decided to venture out with a different type of dish. The ambiance was chill with jazz being played in the background. Definitely a relaxing spot to enjoy your daily dose of soup!

Service was friendly. We were fiest customer maybe haha Food was better than expected We got ramen and rolls Space is spacious for even for young child 3-5 yr olds

we stopped by i20 for a weekend lunch. we were able to get a table and order fairly quickly. service was kind of slow after ordering, it took a while to get our food. another person with us ordered sushi and they were done by the time we got cooked food. the sushi felt high quality and tasted good. the bento boxes are really nicely sized and fit the price. both the chicken katsu and chicken teriyaki were flavorful and cooked well. i love the little side options that allow you to taste a bit of everything. gyoza, shrimp tempura, and california rolls were all great. would definitely come back here!

Vegetarians need not read further. No vegetable or salad dishes here, not even edamame. For everyone else, good choices for both ramen and katsu. Drink menu seemed fancy also, but I didn't drink that day. Katsu took a bit to prepare compared to the ramen, but tasted good when it came out. Service was very friendly. No wait at 6:00 PM on a weekday. Plenty of parking in the lot.

After doing some shopping at Brea Mall, my siblings and I worked up an appetite. We decided to stop at i20 Ramen Katsu. We ordered sushi rolls (not pictured; sorry, we were hungry) and a plate of yellowtail. It was my first time trying the yellowtail, and I loved it! It tasted so fresh and well-seasoned. We ordered an Arnold Palmer mocktail, and it was so refreshing. It wasn't too sweet. The service was great. Our waitress was helpful, welcoming, and attentive. The ambiance was very relaxing. I wanted to take a nap, ha! They had classical music playing in the background. I definitely see myself visiting again.

Amazing, savory, top quality ramen! Their Miso Ramen broth is rich and filling. Loved it! My friend got their pork katsu and she said it was tasty. A must-try ramen spot in the Fullerton area!

My husband and I got the yuzu serrano ramen and made it a combo with chicken katsu curry bowl (+$7) and I think for the quantity, it was well worth 4 stars. We both were pretty full! In terms of flavor, I'd probably give it more a 3-3.5. My husband liked the flavor of the yuzu ramen more than the curry, and he'd had enjoyed it more had it gotten it less sodium (which was an option!) and less spicy. The smell you get when you take a bite is yuzu but that serrano is quite strong...definitely not for the faint of heart. The curry, not your typical Japanese curry katsu. Not quite sure what the flavor was. Didn't love it but didn't hate it.