Definitely grab the Fujifilm Fujinon XF 23mm f/2 R WR! I took mine to Tokyo last year and it was honestly amazing for those tight Shinjuku alleys. The 35mm is cool but way too narrow when things get crowded. Since youre on a budget, this lens is a total steal and fits the XT30 perfectly. Youre gonna have a blast!

Building on the earlier suggestion, I'd say dont sleep on the Fujifilm Fujinon XF 27mm f/2.8 R WR. Its basically a pancake lens which makes your XT30 tiny and way less intimidating when youre getting close to people in the street. Tokyo is super crowded so having something that fits in a jacket pocket is a huge plus. The focal length is also a nice middle ground between the 23 and 35 if you cant decide. Quick tip: definitely check the used market for this one. You can usually find it way under your budget which leaves you extra cash for more gear or just better food on your trip. Just make sure you get the newer WR version with the aperture ring. Its a solid little lens that works well if you want to stay low key while shooting.

@Reply #1 - good point! Quick question, you shooting mostly at night?

• Im happy with Sigma 30mm f1.4 DC DN Contemporary Fuji X
• It works well and is very reliable

Michaellab makes a solid point about the pancake size, honestly. Tokyo streets can get overwhelming, and having a smaller setup definitely helps keep you under the radar. Since you're capped at 500 bucks, you might want to consider going the third-party route for better glass at a lower price point. Just be careful with manual focus if you aren't used to it, but for street stuff, zone focusing is a game changer.

• Viltrox 23mm f/1.4 XF - super sharp and gives you that extra stop of light for night shots, usually well under budget
• TTArtisan 27mm f/2.8 - if you want the pancake vibe but dont wanna pay the premium for the Fuji version Make sure to grab a decent strap if you end up with the Viltrox since it adds a bit more weight than the Fuji primes. Honestly, just pack light and enjoy the trip!