Came here for dinner awhile back and their izakaya didn't stand out but came back for lunch with colleagues today and wow they're lunch bentos were delicious! I wish I remembered to take photos.
The quality and presentation of my chicken bento box overruled my annoyance of having waited 40 minutes for our miso soup, salad and lunch bentos. Was the meal worth the 40 minute wait? No, but overall I was very pleased with their lunch set. All bentos offer a choice of steamed vegetables or tempura. My bento had chicken terayaki, a dumpling, two pieces of cali roll, salad, rice (they use purple rice). I liked that they used a yuzu sauce for their salad, rather than the usual japanese salad dressing. Chicken was a little overcooked but everything else was fresh and tasty. Everyone enjoyed their bentos of salmon, kalbi, beef, and rolls (spicy salmon and cali). One friend ordered the sashimi rice but I would recommend the bento as it offers a wider variety of food and portion is larger.
Because Tsuki opens at 11:45 on weekdays, I think the kitchen took some time to warm up hence the long wait. I'd definitely come back for their lunch though. The staff also recommended calling in to pre-order the food in order to avoid long waits, if you are tight on time.