Yesterday Calls W-Engine Guide: Dialyn’s Physical Stun Signature
Yesterday Calls is Dialyn’s top Physical Stun W-Engine, delivering off-field Energy Regen, EX Special pressure, and team CRIT DMG support in 2026.
I still keep Yesterday Calls in my Dialyn loadout because it solves the exact problem I have with Physical Stun teams: I want fast EX Special pressure, steady off-field energy, and a team-wide damage spike without rebuilding my whole rotation. In 2026, this S-rank W-Engine remains one of the cleanest signature picks for Dialyn, and my field notes below cover its stats, best users, rerun status, and ascension prep.
⚡ Quick Verdict
| Category | My Take |
|---|---|
| Rarity | S-rank W-Engine |
| Best user | Dialyn |
| Secondary option | Pulchra |
| Role | Physical Stun support and team CRIT DMG |
| Acquisition | Exclusive banner W-Engine |
| 2026 status | Version 3.1 Phase 2 rerun ended; no active banner in my notes |
Yesterday Calls is the signature weapon of Dialyn, so I never treat it as a generic stat stick. It is built around Physical Stun gameplay, and that focus is exactly why it feels so natural on Dialyn. I get the most value when I lean into her EX Special Attack pattern, because she can deal Physical DMG in quick succession up to three times. That rhythm matches the W-Engine’s identity, and it makes my stun windows feel much more deliberate.
🧪 Stats and Effects I Noticed
The headline effect is not raw Aftershock damage. I want to be clear about that because Pulchra players may expect a direct upgrade there. Yesterday Calls does not buff Aftershock DMG. What it does provide is increased Energy Regen while off-field, plus a stack bonus that gives the team a temporary CRIT DMG boost. In my testing, that combination is more about team tempo than personal screen time.
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🔋 Off-field Energy Regen: I can swap out and still keep my next cycle moving.
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💥 Stack bonus: The temporary CRIT DMG boost rewards me for timing my swaps around Dialyn’s EX Special pressure.
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🧊 No Aftershock buff: I do not pick this for Aftershock-focused teams; I pick it for Physical Stun and team damage windows.
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🎯 Signature synergy: Dialyn is the primary recommended Agent, and the kit fit is obvious once I start chaining her EX Special hits.
🥇 Best Characters
I rank the recommended users from most to least recommended based on how naturally they use the full effect. Dialyn is first by a wide margin. Pulchra is the secondary name I keep in mind, mainly because the off-field Energy Regen is useful and the stack bonus can feed a temporary CRIT DMG boost for the team. However, I would not pretend this is an Aftershock weapon. If my team plan is built around Aftershock DMG, I look elsewhere.
| Recommendation | Agent | Why I Would Equip It |
|---|---|---|
| ⭐ Most recommended | Dialyn | Signature Physical Stun synergy; EX Special can deal Physical DMG up to 3 times in quick succession |
| ✅ Good alternative | Pulchra | Benefits from off-field Energy Regen and the team CRIT DMG stack bonus, but does not gain Aftershock DMG |
| ❌ Not my first choice | Aftershock-focused Agents | The W-Engine does not buff Aftershock DMG, so I would rather use a more direct option |
🎰 How to Get Yesterday Calls
Yesterday Calls is an exclusive S-Rank W-Engine. I cannot farm it from a standard pool, and I would not expect to find it through ordinary off-banner pulls. Its latest rerun banner appeared in Phase 2 of Version 3.1, and that banner has since ended. As of 2026, I have no active Yesterday Calls banner in my notes, so the practical advice is simple: save for a future rerun and do not spend resources chasing a weapon that is not currently featured.
Since this is an exclusive S-Rank W-Engine, Proxies may not get this anywhere else. A rerun might occur in the future, so I keep an eye on banner schedules before I commit my pulls. If Dialyn is already a core part of my Physical Stun plan, Yesterday Calls is worth waiting for rather than settling for a temporary substitute.
📈 Ascension Materials
I use the material chart below as a checklist before a rerun. The exact inventory cost depends on how far I ascend the W-Engine, but the planning logic stays the same: I stockpile early-tier W-Engine materials, mid-tier upgrades, high-tier specialty drops, and a large pile of Dennies. I prefer to pre-farm before the banner returns so I can equip and level the W-Engine immediately after pulling.
| Ascension Stage | What I Prepare |
|---|---|
| Early phases | Basic W-Engine materials and Dennies |
| Mid phases | Advanced materials and character progression resources |
| Late phases | High-tier specialty materials and a large Dennies reserve |
| Final prep | Enough materials to reach my planned level before the next combat cycle |
⚙️ Overclock Effects and Build Notes
Overclock improves the comfort and ceiling of the W-Engine, but I do not treat extra copies as mandatory before I secure the core pickup. My priority is simple: get Yesterday Calls onto Dialyn first, then decide whether more Overclock investment is worth it for my account. The W-Engine’s identity does not change at higher Overclock; I still value the off-field Energy Regen, the stack bonus, and the temporary CRIT DMG boost for the team.
In my rotation, I like to use Dialyn’s EX Special Attack in quick succession, then swap to let the team benefit from the stack bonus during a burst window. That is where Yesterday Calls feels less like a passive stat boost and more like a tempo tool. I also avoid forcing Pulchra into an Aftershock role with this W-Engine; if I use her, I use her for the Energy Regen and team CRIT DMG support, not for Aftershock amplification.
🏁 Final Thoughts
Yesterday Calls is a focused S-rank W-Engine, and I appreciate that it does not pretend to be universal. It is Dialyn’s signature for a reason: Physical Stun pressure, fast EX Special sequences, off-field Energy Regen, and a team CRIT DMG stack bonus all come together in a package that rewards deliberate swaps. In 2026, with the Version 3.1 Phase 2 rerun already over, my advice is to prepare materials, keep Dialyn’s build ready, and wait for the next banner rather than spending on a substitute that misses the point of the weapon. For me, Yesterday Calls remains the signature finish I want on Dialyn, and I would rather plan around a future rerun than compromise the stun window I enjoy most.