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 T5).

Ice Preservation Sustain · MoC T5 · PF T5 · AS T5

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

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 Investment Priority

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.
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.

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.