I was informed the proper phrase for take out is "O mochi Kae-ri shi tai-n desu" お持ち帰りしたいんです

This place was so good and worth the wait. You wait outside if it's busy - we got there 15 mins before opening on a weekday and there was a line. Luckily we were the first few in line so didn't wait too too long but it was closer to an hour wait. It was chilly that day and the workers got us hot tea to drink while waiting. They also take your order outside. They have an English menu available but you can also find it online to save time. There are so many options to choose from. The onigiri themselves are HUGE. We each got a set that comes with 2 onigiri, a miso soup, and a refillable hot tea all for 800yen. Service was amazing. Everyone was so nice and attentive. They only allow pictures inside and no videos.

Finally tried the famous onigiris! Their serving sizes are huge. We didn't have to experience any sort of wait, since we ordered it for delivery via UberEats. The best ones here were the onigiris with the soy-marinated egg yolks! Those and the tuna ones were my fav. It's definitely on the pricier side compared to other spots in that area. I didn't find anything too unique from this spot, apart from the onigiris with the egg yolks too. However, they were still delicious and I'd still recommend them!

Everything you want out of onigiri, but turn it up to 11 The staff is so nice and accommodating, and luckily on a weekday the line was non-existent at lunchtime The list of onigiri can be overwhelming but luckily they have multiple language menus to explain what each one is I opted for a good mix so I got salted egg yolk, squid with spicy roe, chicken karaage, and the short neck clam and each bite was better than the last The onigiri is stacked with a large mound of rice, and stuffed that each bite had filling coming out (in the best way) Insane, worth the wait, this puts the 7-11/Family mart onigiri to shame and I can't wait to try other flavors

Onigiri to me, without any relation to resemblance, is like potato chips. I can't have just one and I get random cravings for them. Onigiro Bongo is a place that completely satisfies this craving and is also a fine location to fall into a food coma. Unlike your standard onigiri, the portions are much larger and the fillings are very generous so for each bite, you won't get just nori and rice. This is a famous venue so expect a long wait. I waited about 1.5 hours and upon entering, I understood why. Like most places in Japan, there's maybe only about ~12 seats at the bar where you'll find one person making the all the onigiri orders. The other staff are doing the other prep work for the onigiris so it's like a very small production line. They work fairly quickly so once inside, you don't wait very long to receive your order. I tried a variety of onigiris and they were all fantastic. The menu is extensive with a lot to choose from. But with limited stomach space, I went for the minced ground beef & egg yolk, salmon with mayo, and the salted roe and salmon. All were very delicious! One thing to note tho is the salted roe is JUST that. Salty...very salty. But the rice and salmon did help balance that out. The wait is all entirely outdoors so be prepared for whatever weather is forecasted. When I went, it was very hot and sunny but occasionally, the staff checked on the line and provided cold green tea to everyone waiting. And as you get closer, there are umbrellas available which the staff handed out to shade us from the sun.

Happened to be staying caddy corner to Bongo, which is apparently the most famous onigiri place in Tokyo, and noticed one afternoon that the line looked unusually short. After having read that people often wait two, three, sometimes even four hours for these onigiri, we thought we'd give it a shot. We ended up only waiting an hour, which seems like a lucky break. At the time of this writing there were 57 different varieties of onigiri on the menu. I ordered three of the "top ten" onigiri and could only finish two. They're huge... and bursting with umami flavor. Watching the owner and her staff whip the rice balls up is incredible and you'll be tempted to film the whole thing on your phone until the miso soup comes and the guy working in front of you reminds you that it's best to drink your soup before it gets cold. If you don't finish an onigiri they will pack it up for you and it should stay good for a few hours. If you're willing to brave the potentially long wait, these large, delicious onigiri will really expand your perception of what a rice ball can be, and also expand your belly. Highly recommended.

Don't come when you're hungry! Came around 3:30pm on a Monday and had to wait almost 4 hours. There are 9 seats available inside, so it was almost 7:30pm by the time we were seated. You order your food outside when you're at the front of the line. It was nice that around 6-7pm, they started giving out hot tea to the customers waiting at the front. They make each onigiri by hand so it does take some time(20min) before you get your food. Even though they take your order while you're outside, they only start making it after you're seated to keep your food as fresh as possible, and to keep the seaweed from getting soggy. You also get to watch them make the onigiri in front of you. We ordered curry, egg yolk soaked in soy sauce, cream cheese with salted salmon roe, egg yolk and meat soboro, and salted salmon roe and sake. Surprisingly, the cream cheese with salmon roe was my favorite by far. All the workers were very friendly, and reminded you that you can get unlimited free refills for your hot tea and miso soup. When they saw your bowl or cup empty, they check in to ask if you wanted more. Would I come and wait in line again? No, but it was a nice experience watching them make our food. I will be calling in to go next time!

Worth the 2 hour wait! Go early, we got in line at 9:30 am (shop does not open until 11:30) and we were 5th in line. Everything was delicious, we got the mentaiko cream cheese, cheese, beef tendon, mayo salmon, spicy mentaiko, tuna mayo, ikura, and soy marinated egg yolk. I highly recommend the mentaiko with cream cheese, egg yolk, and the tuna or salmon mayo classics. Spot is right across from the train station and is really hard to miss.