In the winter of Version 1.4, a new Drive Disc slipped into Zenless Zone Zero's loot tables like a cold wind through a cracked window—quiet at first, then impossible to ignore. Branch and Blade Song did not announce itself with a flashy trailer or a bombastic event; it simply appeared in Routine Cleanup and in the Bardic Needle Music Shop, waiting for someone to notice that it asked Ice Anomaly Agents to abandon their usual Anomaly Proficiency comfort zone and reach for CRIT Rate and CRIT DMG instead. For a certain Proxy named Sable, the discovery came during a routine Monster Duet run at Scott Outpost, when a four-piece set dropped and her Miyabi suddenly felt less like a slow-burning frost and more like a guillotine made of ice.

At first glance, the Disc's demand sounds like a contradiction. Anomaly Agents are supposed to stack Anomaly Proficiency, right? Branch and Blade Song disagrees—but only under specific conditions. The four-piece set works well with Anomaly Agents who are built for DPS with CRIT Rate and CRIT DMG instead of Anomaly Proficiency, provided they sit in an Ice team where Freeze and Shatter can come easily. In other words, the Disc is not a universal replacement for every Anomaly build; it is a specialist's tool, a tuning fork struck against a glacier that asks the whole team to resonate at a colder, sharper frequency. The two-piece bonus is far more flexible: any Agent with a DPS build can slot it in for additional CRIT DMG, no Ice team required.

The best character for Branch and Blade Song so far is Miyabi. Her kit already leans toward CRIT scaling and Ice application, so the Disc's push away from Anomaly Proficiency feels less like a sacrifice and more like a lockpick made of frost sliding into a safecracker's hands—the tumblers of Freeze and Shatter click into place with a precision that raw anomaly stacking rarely matches. Other Anomaly Agents can experiment with the two-piece set for a quick CRIT DMG boost, but the full four-piece experience is reserved for Ice teams that can reliably trigger Freeze and Shatter. A table helps sort the roles:

Piece Count	Effect Direction	Best Fit
2-piece	Additional CRIT DMG for DPS builds	Any DPS Agent
4-piece	Encourages CRIT Rate/CRIT DMG over Anomaly Proficiency in Ice teams with easy Freeze/Shatter	Miyabi and other Ice Anomaly DPS

Getting Branch and Blade Song is a two-lane road. The first lane runs through Routine Cleanup's Monster Duet stage, accessible via Scott Outpost. Each challenge costs 60 Battery per run, so players learn to budget their energy like a miser counting coins in a blizzard. The stage itself is a combat challenge where Plating Agents can drop, and those Plating Agents are the second lane's currency.

The second lane leads to the Bardic Needle Music Shop, where Plating Agents can be exchanged for Drive Discs. Those Plating Agents come from several sources: Rally Commissions, Routine Cleanup stages, dismantling unwanted Drive Discs, and the New Eridu City Fund battle pass. Exchanging higher-rarity Plating Agents increases the chances of receiving higher-rarity Drive Discs, which is the game's way of saying that quality in, quality out. The shop is not a slot machine that rewards impatience; it is more like a music box that only plays the right tune when you feed it the right notes.

For battle pass players, the New Eridu City Fund adds another steady drip of Plating Agents at certain tier levels. It is not a glamorous source, but it keeps the exchange moving. In the crowded orchestra of Drive Discs, Branch and Blade Song is the unexpected duet between a blade and a branch—one cuts, the other bends—and together they make a sound that Ice teams have been waiting to hear. As of 2026, the Disc remains a niche but potent choice for CRIT-focused Ice Anomaly compositions, a reminder that Version 1.4's design team was willing to let Anomaly and CRIT shake hands on the same frozen battlefield.

For players who want to put the Disc to work, the checklist is simple:

• ✅ Build the team around Ice and reliable Freeze/Shatter.

• ✅ Treat CRIT Rate and CRIT DMG as the primary stats for the four-piece holder.

• ✅ Use the two-piece bonus as a flexible CRIT DMG patch on other DPS Agents.

• ✅ Farm Monster Duet in Routine Cleanup and spend 60 Battery per run.

• ✅ Exchange higher-rarity Plating Agents at the Bardic Needle Music Shop.

• ✅ Dismantle unused Drive Discs and clear Rally Commissions for more Plating Agents.

• ✅ Collect battle pass Plating Agents from the New Eridu City Fund.

Branch and Blade Song is not a Disc that rewrites every Anomaly build overnight. It is a specialist's invitation: bring an Ice team, bring CRIT stats, and let Freeze and Shatter do the rest. For Miyabi and her fellow frost-scaling Agents, it is less a piece of gear and more a second heartbeat—one that beats in time with the shatter of frozen enemies and the quiet, satisfying click of a CRIT that lands exactly where it should.

Details are provided by Digital Foundry, whose technical breakdowns of game systems and performance help contextualize why a niche set like Branch and Blade Song can feel so impactful when its conditions are met, especially in compositions where consistent Freeze and Shatter timing turns stat allocation into a more deliberate DPS optimization choice rather than a standard Anomaly stacking formula.