This NTE gacha system page is built as a decision hub, not just a rules article. The goal is to help players separate Limited Board, Standard Board, and Arc Research Program planning before they convert Annulith or lock themselves into the wrong pull route.
The most important launch-window decisions are simple: Solid Dice are for limited character boards, Fabricated Dice are for the Standard Board and selector progress, and Tri-Keys are for Arc Research Program pulls. Treat each path as a separate budget.
Because some banner rates, Arc Research wording, cosmetic milestone behavior, and selector edge cases still need in-game confirmation, this page keeps high-confidence rules visible while marking uncertain details as Needs Verification or Needs In-Game Test.
Limited BoardSolid DiceUse for Nanally, Hotori, and future limited S-Class targets.
Standard BoardFabricated DiceUse for permanent S-Class pulls and selector progress.
Arc ResearchTri-KeyUse for Arc or weapon pulls, not character boards.
No Traditional 50/50Limited S-Class TargetedHigh-confidence public guides report the featured limited S-Class is guaranteed when you hit S-Class.
Board ModificationStarts After 70 PullsTreat it as pity assistance, not your main planning breakpoint.
Hard Pity90 PullsUse 90 as the safe budget line for limited S-Class planning.
Pity Carry-OverSame Banner TypePublic guides report pity carries between limited boards and within other matching banner types.
Standard SelectorUnlocks After 50 PullsUse the beginner discount route first, then delay the actual pick until your account direction is clear.
Annulith Cost160 Per Pull EquivalentDo not convert until you know whether you need Solid Dice, Fabricated Dice, or Tri-Keys.