Who Should You Upgrade First? A Hero Investment Guide

Investment priority is a team decision. The story only needs three active heroes, and the current catalog's shared materials mean every upgrade you make to a fourth hero delays the trio. Before choosing who to upgrade, define the goal: which chain does the team run, which edge is weakest, and which milestone the story is asking for. The team builder /team-build shows the chain, and the quest database /quests shows the story's next requirement.

A useful frame is role-based: the connector's two edges hold the rotation together, so the connector usually earns the next upgrade; the opener's status unlock gates the whole chain; the finisher's Signal level gates the payoff. When two heroes compete for the same materials, the one whose upgrade completes a working milestone wins. Compare the milestone costs in the material planner /material-planner instead of comparing heroes in the abstract.

Upgrade costs are cumulative to the chosen step, and the useful stopping point is the level or ascension step where the chain actually works—often where a skill gains its apply or consume status. The hero database /heroes publishes every skill level and its chain requirements, so "upgrade this hero" becomes "reach skill X at level Y", which has a countable material cost. Plan one reachable milestone at a time: cost, spend, verify the chain in combat, then re-plan.

A milestone that looks small in isolation can be large in aggregate, because several skills share the same material pool. The material planner /material-planner merges all current upgrade targets into one shortage ledger, which reveals whether the "cheap" hero is actually the one that competes with everything else you need.

Every newly unlocked hero arrives with a level-up prompt, and the roster's shared materials make a wide roster expensive. Keep the active trio close in level and leave the bench at unlock state, with two exceptions: a quest that requires a specific hero's level, and a planned slot swap where the replacement needs a minimum level to connect. Both are countable requirements, so verify them in the quest database /quests and hero database /heroes before spending.

This restraint has a payoff: when the story or a new unlock changes the team, the materials you saved can buy the new slot immediately. A flexible account beats a wide but shallow roster.

Early on, the constraint is usually a missing status unlock, so the opener's skill level is the priority. In the midgame, the constraint shifts to survival and damage, and the trio needs equipment and Karma as much as levels. Late, the priority is the endgame-specific builds: the teams for Raids, Hunts, and the Tower of Trials need their chains at full strength with the equipment that supports them. The build planner /build-planner compares the loadout side of the same decision.

When the stage changes, re-run the priority question from scratch. A hero that was a low priority at level 20 can become the top priority at level 60 if its chain now gates an endgame team. Keep the goal, the chain, and the milestone in view instead of a fixed ranking.

After spending, verify the chain in combat and record the next verifiable step: the next milestone for the same hero, a source route for a shortage, or a slot swap that the new materials enable. The material planner /material-planner keeps the ledger current, and the hero database /heroes and and team builder /team-build keep the chain facts current. When a "who should I upgrade" question comes up again, the answer is the same process—goal, role, milestone, cost—executed against the current data.

Schedule one standing review per week for the investment decision, and keep it short. Re-open the team builder /team-build to confirm the trio still connects, check the material planner /material-planner for the next milestone, and ask whether the story or a new unlock changed the goal. The review takes five minutes and prevents the drift that turns a focused trio into a wide, shallow roster. The milestone that was right last week can be wrong this week, and the standing review catches the change while the materials are still in the bank.