March 7th — Honkai Star Rail Character Guide

March 7th is a Ice Preservation Sustain in Honkai: Star Rail, and this HSR build guide covers teams, relics, light cones, and investment priority. recommended relics are Self-Enshrouded Recluse with Belobog of the Architects; the top light cone is Moment of Victory; the first investment target is E1; March 7th is strongest in Memory of Chaos (MoC 10 Weak).

Ice Preservation Sustain · MoC 10 Weak · PF 10 Weak · AS 10 Weak

For account-specific results, use the HSR team builder, compare upgrades in Pull Advisor, optimize equipment in the LC Optimizer, or read the StarGuide methodology.

Guide

Overview

Early-game shielder and AoE Freeze support who excels at crowd control in multi-target scenarios. Single-target shields scale off DEF with aggro increase and debuff cleanse built in. SP-negative and outclassed by modern sustains in endgame.

Preservation shielder who applies single-target DEF-scaling shields with built-in aggro redirection, triggering counter-attacks when shielded allies are hit. Secondary role as AoE Freeze support via Ultimate with 65% base Freeze chance (with A6 trace). Manages a tension between SP-negative shielding and Ultimate-focused Freeze rotations, pivoting between defensive and crowd control playstyles depending on combat state.

Key Mechanics

  • Shield absorbs damage based on the shielded ally's DEF, not March's DEF — tanky allies like March herself get more effective shielding than squishy characters. Shielding herself and using the aggro draw to tank is often more SP-efficient than repeatedly re-shielding fragile allies.
  • Counter attacks from Talent generate 10 Energy each (up to 20-30 per turn), making counter-heavy scenarios the primary Energy source for faster Ultimate cycling. Self-shielding with aggro draw maximizes counter triggers.
  • Freeze chance scales from 65% base (with A6) through Effect Hit Rate. At 92% Effect Hit Rate, effective Freeze rate approaches 100% against non-immune enemies. Without A6, the 50% base makes Freeze builds impractical.
  • Cannot solo sustain — shields absorb damage but do not restore HP (until E6 adds minor healing). Teams relying on March as sole sustain need either very tanky compositions or a backup healing source.

March 7th FAQ

What relics should March 7th use?

March 7th's recommended relic setup is Self-Enshrouded Recluse with Belobog of the Architects, with stat targets around DEF 1800-2200+, SPD 134+, Effect Hit Rate 64-92%.

What is the best light cone for March 7th?

Moment of Victory is the top listed light cone for March 7th. Best overall option. Provides a permanent taunt effect that redirects attacks toward March, massive DEF scaling (24% DEF at S1), and additional conditional DEF when attacked (up to 24% stacked). Ideal for self-shield counter builds where March tanks. When the goal is to shield a specific ally rather than March herself, the taunt conflicts with that intent.

How should I invest in March 7th?

March 7th's first listed investment priority is E1. Best stopping point for freeze-focused builds. Regenerates 6 Energy per frozen enemy with Ultimate, enabling near-permanent freeze chains in multi-target scenarios and significantly improving Ultimate uptime.

Important Notes

  • Outclassed in endgame sustain by all modern options — Aventurine, Huohuo, Gallagher, Fu Xuan, Gepard, and Lynx all provide superior survivability with better utility at equivalent investment.
  • Cannot solo sustain teams reliably — shields absorb damage but do not restore HP, requiring a backup healer or an extremely tanky DPS in challenging content.
  • SP-negative: Skill costs 1 SP per use. Most modern endgame teams cannot accommodate this cost without restricting amplifier usage.
  • Freeze composition is entirely negated by freeze-immune enemies, which are common in Memory of Chaos and Apocalyptic Shadow bosses.

Build

March 7th Investment Priority

  1. E1 — Best stopping point for freeze-focused builds. Regenerates 6 Energy per frozen enemy with Ultimate, enabling near-permanent freeze chains in multi-target scenarios and significantly improving Ultimate uptime.
  2. E4 — Adds a third counter per turn and introduces 30% DEF scaling to counter damage — the only offensive DEF scaling in her kit before E4. Noticeably improves energy generation in counter-heavy scenarios.

March 7th Relics and Stat Targets

Recommended: Self-Enshrouded Recluse with Belobog of the Architects

Stat targets: DEF 1800-2200+, SPD 134+, Effect Hit Rate 64-92%, Energy Regen 19.44%+

Main stats: Body: Effect Hit Rate > DEF% · Feet: SPD · Sphere: DEF% · Rope: Energy Regen > DEF%

Best March 7th Light Cones

  • Moment of Victory (Best in Slot): Best overall option. Provides a permanent taunt effect that redirects attacks toward March, massive DEF scaling (24% DEF at S1), and additional conditional DEF when attacked (up to 24% stacked). Ideal for self-shield counter builds where March tanks. When the goal is to shield a specific ally rather than March herself, the taunt conflicts with that intent.
  • Inherently Unjust Destiny: Strong alternative. Provides 40% DEF at S5 for stronger shields and applies 12% DMG Vulnerability when a follow-up attack (including March counters) hits — a team damage buff absent from other Preservation LCs. Lacks taunt, so DEF stacking upside is lower, but the vulnerability debuff contributes more to team output.
  • Journey, Forever Peaceful: Best Battle Pass option for shield-focused builds. At S5, increases March's Shield Effect by 24% and grants 20% DMG buff to any shielded ally. Directly improves shield strength without requiring high DEF investment and buffs team damage passively.
  • Day One of My New Life: Solid 4-star alternative. Provides DEF% for stronger shields and a team-wide 12% DMG Reduction at S5 — a distinct survivability contribution that complements the shield. More accessible from the standard pool than limited options.