Companionship

Every character but the Traveler keeps a total of Companionship EXP, and its Friendship Level is the count of the game's levels that total has reached. Only the total is stored, so the level cannot disagree with it. The Original Resin claims are the first source that gives the EXP. The stories and voice-overs a level opens are on the character profile, a character at level 10 holds its namecard, shown on the profile by its name, and the Serenitea Pot dialogue and the namecard's art and description are not drawn yet; the commissions and random events that also give EXP have no page built.

How it works

flowchart LR
  CL["A claim at a blossom: its kind's Companionship EXP"] --> G{"Deployed team, and not the Traveler?"}
  G -->|"yes"| T["Total EXP, capped at the top level's"]
  G -->|"no"| N["Unchanged"]
  T --> L["Friendship Level: the levels the total has reached"]

Data

• The level table. The dump's AvatarFettersLevelExcelConfigData rows give the EXP each level takes to leave. genshin:assets friendship sums them into each level's total, so level 2 is 1,000 and level 10 is 29,100. The row past the top level is never summed in.
• The namecards. The dump's FetterCharacterCardExcelConfigData rows name each character's level 10 reward. RewardExcelConfigData gives its one item, and MaterialExcelConfigData names that item as a namecard, so Amber's is item 210003 under text id 273889772. The namecards and the levels are one file, friendship.json.
• The claim amounts. BlossomCompanionshipExpMap holds one amount per blossom kind, provisional until a recording measures it.

Notes

• The grant is whole, not split. Every deployed member but the Traveler gets the full amount, a fallen one included, since the grant reads the team rather than their health.
• Past the top, nothing is kept. The total stops at the top level's, so a character there gains nothing and a claim that would pass it is cut short.
• Provisional amounts. Each claim kind is given the low end of the wiki's range for it, and two clips on the roadmap's Recordings owed list, one per pair of kinds, measure what a claim gives.
• A namecard is held by its level. A namecard is in the held list once its character's total EXP reaches level 10, read from the same levels, so no save keeps it. Its art is the game's texture and is never served, so the profile sets its name on a plate of its own, its description waiting on the static-data host.
• Not built. The Serenitea Pot dialogue and the namecard's description and art, which the proposal keeps; the stories and voice-overs are on the character profile. The claim is a rule with no claim screen calling it yet.

Key files

Sources

• AnimeGameData, the community's per-patch dump: the AvatarFettersLevelExcelConfigData rows the level totals are summed from.
• Companionship EXP, Genshin Impact Wiki: the per-claim ranges the provisional amounts take their low end from.