Honkai: Star Rail character guide

Sunday Best Build

Sunday is a support built around summon advance and energy.

Sunday build overview

Sunday is a Imaginary Harmony character commonly used for support, summon advance, energy. The recommended build focuses on the part of the kit used most often while keeping the team rotation reliable.

Use Sacerdos’ Relived Ordeal as the primary Relic set and Lushaka, the Sunken Seas as the Planar Ornament. Recommended main stats are CRIT DMG, SPD, HP% / DEF%, Energy Regen. Secure important Speed, Effect Hit Rate or Break Effect requirements first when the kit needs them, then improve the character's main scaling and offensive or defensive substats.

Light Cones and alternatives

A Grounded Ascent is the premium Light Cone because its passive is designed around Sunday's core mechanics. The build remains functional without it. Past and Future and Dance! Dance! Dance! provide practical alternatives when their passives stay active in the selected team. Strong Relic stats can be more valuable than forcing a theoretical equipment upgrade with poor synergy.

Recommended teams

  • Premium team: Jing Yuan, Sunday, Robin, Huohuo. This formation keeps Sunday in the core role while covering damage amplification, turn economy and sustain.
  • Alternative team: Aglaea, Sunday, Trailblazer Remembrance, Huohuo. This formation keeps Sunday in the core role while covering damage amplification, turn economy and sustain.
  • Accessible team: Sunday, Tingyun, Pela, Gallagher. This formation keeps Sunday in the core role while covering damage amplification, turn economy and sustain.

When replacing a teammate, preserve the same job rather than copying rarity alone: keep the required buffer or debuffer, maintain Skill Point economy and add a sustain suited to the encounter.

Trace priority

  • Lower priority: Gleaming Admonition
  • High priority: Benison of Paper and Rites
  • Highest priority: Ode to Caress and Cicatrix
  • High priority: The Sorrowing Body
  • Lower priority: The Glorious Mysteries

Raise the ability that defines Sunday's main role first. Lower-impact abilities can remain below maximum until the character, Light Cone and important teammates have received their guaranteed upgrades.

Investment advice

Start with character and Light Cone levels, major Traces and correct main stats before extended Relic farming. An E0 build with a suitable alternative Light Cone is intended to be complete. Signature equipment and Eidolons are premium upgrades and should be compared with improvements to the rest of the account.

Frequently asked questions

Does Sunday need the signature Light Cone?

No. A Grounded Ascent is the premium recommendation, but the listed alternatives preserve the core playstyle.

What is the most important build rule?

Meet the character's functional stat requirements first, then improve damage or utility without breaking team order and resource management.