The Bottom Line: You can snag all 79 Onikabuto across Inazuma's islands in under 20 minutes if you know the right routes. Since these purple beetles respawn every 48 hours, you're looking at three farming sessions to hit Itto's full 168-beetle requirement.
Why Itto Needs So Many Damn Beetles (And Yes, It's 168)
What Makes Onikabuto Special
These aren't your average bugs. Onikabuto are Inazuma's signature purple beetles that hang out in Electro-heavy spots – think trees, rocks, caves, basically anywhere that crackles with energy. The good news? They don't scurry away when you approach, unlike those annoying Crystal Flies that seem to have a sixth sense.
Here's something most guides won't tell you upfront: only two characters in the entire game need these beetles. Arataki Itto and Shikanoin Heizou both demand the exact same quantities, which honestly feels like the devs just copy-pasted the requirements. If you're planning to build both characters (and why wouldn't you?), you're looking at 336 beetles total.
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Breaking Down Itto's Ascension Math
Let me lay out the brutal truth about Itto's beetle addiction:
Ascension 1: 3 beetles (manageable)
Ascension 2: 10 beetles (still reasonable)
Ascension 3: 20 beetles (getting serious)
Ascension 4: 30 beetles (commitment territory)
Ascension 5: 45 beetles (this is where it hurts)
Ascension 6: 60 beetles (the final boss of beetle farming)
That's 168 Onikabuto total, plus you'll need 420,000 Mora, 46 Riftborn Regalia from the Golden Wolflord, various Prithiva Topaz gems, and Slime materials. The beetles are honestly the most time-consuming part of the whole process.
Oh, and if you want the Electro Treasure Compass gadget (unlocked at Inazuma Reputation Level 9), that's another 30 beetles. Because apparently, finding treasure requires sacrificing more bugs.
The 168-Beetle Master Route (Actually Tested in 2025)
How the Spawn System Really Works
Here's what you need to know: 79 Onikabuto locations exist across all of Inazuma. They respawn exactly 48 hours after you collect them – not 47 hours and 59 minutes, not roughly two days, but precisely 48 hours.
This means getting your 168 beetles requires three farming runs: two complete sweeps of all 79 locations, plus grabbing 10 more on your third round. I've timed this route extensively, and a full clear takes 18-20 minutes depending on your movement skills and how often you get distracted by other materials.
Before you start, complete these World Quests or you'll hate yourself later:
Sacred Sakura Cleansing Ritual (unlocks Mt. Yougou cavern – trust me, you want this)
Tatara Tales (opens Mikage Furnace areas)
Seirai Stormchasers (stops the constant lightning that'll drive you insane)
Pro tip that changed my farming game: bring Gorou. His Seeker of Shinies passive marks Local Specialties on your mini-map, which is basically cheating in the best way possible.
Narukami Island: Your 29-Beetle Goldmine
Grand Narukami Shrine Area (The Beetle Motherlode)
This region is absolutely stacked with 17 beetles, making it your most efficient stop. The Mt. Yougou underground cavern alone has 6 Onikabuto in one compact area – it's like the beetles are having a convention down there.
Start at the Grand Narukami Shrine teleport waypoint and work systematically around the cliffs. The Kamisato Estate gives you 4 beetles with minimal running around, while Tenshukaku grounds offer 6 more plus 1 hiding in the underground caves beneath Inazuma City.
Don't sleep on Araumi (2 beetles) and Byakko Plain (3 beetles) – they're quick stops that add up.
Kannazuka Island: 28 Industrial-Strength Beetles
Tatarasuna's Beetle Factory
Tatarasuna is your second-best hunting ground with 24 beetles scattered throughout the industrial complex. Some spawns hide behind Thunder Barriers, so you'll need Electrogranum activation – it's like the beetles are playing hard to get.
The Mikage Furnace areas are particularly rich, though you'll be doing some climbing. Start from the main teleport waypoint and spiral outward across the elevated platforms. The Kujou Encampment adds another 4 beetles if you're in the neighborhood.
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Yashiori Island: 12 Scattered Survivors
Higi Village's Musoujin Gorge contains 6 beetles hanging out on spiky branches throughout the ravine system. The Serpent's Head region has another 6 around those massive skeletal remains, though they're more spread out than I'd like.
Fair warning: northern areas still have Balethunder effects that'll chip away at your health. Bring a healer or shields unless you enjoy watching your characters slowly die while beetle hunting.
Seirai Island: 6 Coastal Stragglers
Seirai Island keeps it simple with 6 beetles along Amakumo Peak's western shore. They cluster near the beach on trees – it's actually a pleasant farming spot once you've completed Seirai Stormchasers.
And I cannot stress this enough: do that quest series first. Farming while getting constantly struck by lightning is not the zen experience you want.
Advanced Tactics That Actually Matter
Co-op: The Secret Weapon
Here's the game-changer most players ignore: co-op farming. With permission from other players, you can collect their world's Onikabuto without waiting for your own respawns. This means potentially getting all 168 beetles in a single day instead of spreading it across a week.
Just ask nicely first. Nobody likes a resource thief.
Route Optimization That Works
Minimize loading screens by grouping nearby spawns geographically. Hit the high-density areas first (Mt. Yougou cavern, Tatarasuna), then medium-density zones, and finish with the scattered spawns. Advanced players can glide and climb between spawn points without constantly teleporting back to waypoints.
There's also Shouta NPC in Inazuma City who'll give you 4 free Onikabuto through dialogue (choose what did you offer?). It's near the northern teleport waypoint shrine – free beetles are free beetles.
The Questions Everyone Actually Asks
How many Onikabuto does Itto need for full ascension? 168 total. The breakdown is 3, 10, 20, 30, 45, and 60 across six phases. Heizou needs the exact same amounts because apparently the devs ran out of creativity.
What's the actual respawn time? 48 hours precisely, aligned with server reset cycles. Not about two days – exactly 48 hours.
Where's the best single farming spot? Mt. Yougou underground cavern with 6 beetles in one compact area. For regional farming, Tatarasuna offers the highest concentration with 24 beetles.
Can I farm in co-op? Yes, with permission. It's honestly the fastest way to get all 168 beetles without waiting around for respawns.
Who else uses these beetles? Just Itto and Heizou. That's it. If you're not building either character, you can safely ignore Onikabuto entirely.
How long for a complete farming run? 18-20 minutes for all 79 world spawns using optimized routes. Your first few runs will take longer until you memorize the spawn locations.