The White Day 2026 event runs March 6–22, 2026 (ending 23:59 UTC). F2P players can realistically collect 1,140–1,417 locked Diamonds across the full window — 988 from the couple event alone, plus dailies, login bonuses, and the Achievement Gallery. Here's exactly how to get every Diamond before the clock runs out.
Event Timeline & First Actions
The code deadline is your most urgent task. IT7BQGSC1V expires March 12 — before the banner even opens. Redeem it now: Profile icon → Gift Code → enter exactly as written (case-sensitive) → Redeem. Supported servers: Idol School, Shining Star, South East Asia (Global 1001), Middle East (1002).
Day 1 Checklist
Redeem IT7BQGSC1V immediately
Audit your Achievement Gallery for unclaimed 50–200 Diamond milestones
Check gacha history for your exact pity count
Decide on couple submission strategy — solo NPC is the F2P call (explained below)
Align daily missions with event gifting tasks to double your yield per session
The Couple Submission System — Your Biggest Diamond Source
Most players get this wrong. The instinct is to find a partner and chase the Lucky Award (top 3–5 pairs: 500 locked Diamonds). The numbers say otherwise.
Go solo with an NPC couple.
Solo NPC beats Lucky Award by 388 Diamonds with zero coordination risk. Partnering for Lucky Award isn't just worse — it introduces failure modes. If your partner doesn't submit correctly, you drop to 100 Diamonds (Participation only). Solo NPC has no failure mode. You submit, you get 988. Every time.
Best Couple requires spending 5,376 Diamonds per event week on gifting just to qualify. The 1,000 Diamond prize doesn't cover that. It's a Diamond sink, not a source.
To submit: post your couple PLOG or screenshot with your UID and description to the official Discord channel 💖┊white-valentine or the Steam community page.
Full Reward Tier Breakdown
The Consolation + Participation combo at 988 locked Diamonds is the F2P ceiling for the couple event. It beats Lucky Award by 388 Diamonds and requires nothing from anyone else.
Two Hard Deadlines You Cannot Miss
Magic Box Exchange Cards expire March 22, 23:59 UTC — no carryover, no exceptions
Limited banner pity resets March 22, 23:59 UTC — does not transfer to standard banners or future limited events
Plan your Exchange Card usage before the final day.
Locked Diamonds: The Key Clarification
Locked Diamonds count fully toward limited banner pity. Newer players often assume locked currency is restricted from gacha — it isn't. The only thing locked Diamonds can't do is fund non-gacha purchases like name changes (500 Diamonds). Your 988 event Diamonds work identically to paid Diamonds on the White Day banner.
All Diamond Sources Ranked by Yield
Achievement Gallery: The Most Overlooked Source
This is where experienced players find Diamonds that newer players never claim. The Gallery holds 50–200 unclaimed Diamonds in social, affection, and login milestone categories — and it doesn't notify you. You have to go look.
More importantly: audit it multiple times, not just once. Event activities trigger new milestone completions mid-event. A check on March 6 misses Diamonds that unlock on March 14. Weekly audits are the minimum; every 3–4 days is better.
Daily Missions: Stack, Don't Grind
Don't complete daily missions and event tasks separately. Find the tasks — particularly gifting objectives — that satisfy both simultaneously. Community testing shows this approach effectively doubles Diamond yield per session without adding time. Login streaks matter too: Day 7 and Day 14 peaks both fall within the event window and deliver 30–60 Diamonds each. Miss one day and the streak resets, so treat login as non-negotiable.
Three Mistakes That Cost You Diamonds
Mistake 1: Partnering for Lucky Award instead of going solo NPC. You lose 388 Diamonds and gain a dependency on someone else's participation. Already covered — don't do it.
Mistake 2: Pulling on standard banners during March 13–22. Standard and limited banners have separate pity pools. Every Diamond spent on a standard banner during the event window doesn't count toward your limited banner pity. This is one of the most expensive mistakes you can make during a limited event.
Mistake 3: Checking the Achievement Gallery once and forgetting it. It doesn't notify you. Mid-event milestones unlock silently. Go back and check.
Banner Guide: Should You Pull?
Pity System
Soft pity starts around pull 20, meaning your SSR rate climbs significantly from pulls 20–28. The rule is simple: if you're past pull 19, commit to hard pity. Stopping at pull 22–25 leaves you only 640–1,600 Diamonds from a guarantee. Abandoning mid-soft-pity is one of the most expensive mistakes in gacha.
Pull or Save?
Pull if:
You're within 1,500 Diamonds of the 4,480 hard pity threshold
You're past pull 19 (soft pity is active — commit)
You lack a support SSR and your gameplay centers on gifting/affection content
You've secured all event rewards and have reserves remaining
Save if:
You're more than 1,500 Diamonds from hard pity with limited reserves
You already have a strong support SSR
Your primary content is stage-focused
Spending 70% of your reserves still doesn't get you close to hard pity
The White Day 2026 limited SSR is a support-type idol that scales with 2–3 skill upgrades, relevant to gifting, affection, and stage content. Affection-focused players without a strong support should seriously consider pulling. Stage-focused players with solid existing supports can skip.
The 70/30 Reserve Rule
Spend no more than 70% of your total Diamond reserves on a single banner. Keep 30% in reserve. This protects you from being fully depleted and ensures you can respond to future limited content.
F2P realistic total for this event: 1,140–1,417 locked Diamonds. Hard pity costs 4,480. Starting from zero pity, F2P sources cover roughly 25–32% of a single hard pity cycle. If you're already at pull 15–19, the gap closes significantly. For players who need to bridge a specific gap before March 22, Idol Party Diamonds cheap top up White Day 2026 discount options are worth checking — especially if you're at pull 18–19 and just need a small top-up to enter soft pity.
Day-by-Day Strategy
Days 1–3 (March 6–8): Front-Load
Redeem IT7BQGSC1V immediately
Full Achievement Gallery audit — claim everything available
Check gacha history for exact pity count
Confirm couple submission strategy (solo NPC)
Begin aligning daily missions with event gifting tasks
Don't pull yet — the banner doesn't open until March 13. Use these days to stack locked Diamonds.
Mid-Event (March 9–18): Maintain
Daily login is non-negotiable. Run daily missions with event task overlap every day. Do a second Achievement Gallery audit around March 13–15 — new milestones will have unlocked from your first week of activity. The banner opens March 13; evaluate your pity position against your reserves before spending anything.
Final 48 Hours (March 21–22): Last Chance
Use all Magic Box Exchange Cards — they expire March 22, 23:59 UTC
Final Achievement Gallery check
Banner decision deadline — pity resets at event end
If you're at pulls 20–27, the math strongly favors completing to hard pity rather than stopping
Late Joiners (Post-March 13)
Community data puts the late-joiner realistic total at 1,038–1,138 locked Diamonds. The 988 from NPC couple submission remains fully available. Do that first — everything else is additive.
Top-Up Strategy
First Recharge Bonus
It doubles your first paid top-up, but only once per account. Don't waste it on small packages. Save it for a higher-tier purchase (3,280+ Diamonds) where the doubling effect delivers real value. Using it on a small pack is a permanent mistake.
Timing
Top up before March 22. The banner closes at event end and pity resets — Diamonds purchased after can't be applied to this banner's pity. For players bridging a specific gap before the deadline, buy Idol Party Diamonds online best recharge deal March 2026 through a reliable platform to ensure fast delivery before cutoff.
FAQ
When does the event end? Can I complete it in the last week? March 22, 2026 at 23:59 UTC. Late joiners post-March 13 can still access the full 988 locked Diamonds from NPC couple submission, plus remaining dailies and Gallery milestones. Realistic late-joiner total: 1,038–1,138 locked Diamonds.
Do event points or pity carry over after March 22? No. Magic Box Exchange Cards expire March 22, 23:59 UTC with no carryover. Limited banner pity resets at the same time and doesn't transfer to standard banners or future limited banners. Officially confirmed.
What's the maximum free Diamonds available? Realistic F2P ceiling: 1,140–1,417 locked Diamonds — 988 from event rewards (Consolation + Participation via solo NPC), plus gift code, daily missions, and Achievement Gallery claims. Upper end assumes consistent daily play, no missed login streaks, and thorough Gallery audits.
Should I pull on the White Day 2026 banner or save? Pull if you're within 1,500 Diamonds of hard pity, past pull 19, or lack a support SSR for gifting/affection content. Save if you're far from pity or already have strong supports. Not a default skip — the SSR has genuine value for affection-focused players.
Can locked Diamonds be used for banner pulls? Yes. Community testing confirms locked Diamonds count fully toward limited banner pity and work identically to paid Diamonds on the White Day banner. The only restriction is non-gacha purchases like name changes.
What if I miss the gift code deadline? IT7BQGSC1V expires March 12, 23:59 UTC. Miss it and those Diamonds are gone permanently — no grace period, no alternative. It's the single most time-sensitive action in the entire event.
The solo NPC couple submission isn't just a good option — it's categorically better than every alternative for F2P players. Submit early, audit the Achievement Gallery twice, make your banner decision with a clear pity count, and use your Exchange Cards before March 22. That's the complete picture.