Theorylytics

Asta vs Sunday

Asta vs Sunday — two Harmony characters competing for the same roster slot.

TL;DR — Quick Pick

Pick Asta if…

  • You need a Fire Harmony unit and Asta's kit matches your account gap.
  • You prefer Support gameplay over Sunday's Support identity.
  • Situational—Asta’s team SPD Ultimate still enables Break/FUA.

Pick Sunday if…

  • You need a Imaginary Harmony unit and Sunday's kit matches your account gap.
  • You prefer Support gameplay over Asta's Support identity.
  • Yes for summon/hypercarry—Sunday’s Skill Advance + CRIT buffs stay elite.
Verdict

Asta and Sunday are both Harmony investments that answer different account needs. Asta (Fire, Support) shines when Situational—Asta’s team SPD Ultimate still enables Break/FUA.. Sunday (Imaginary, Support) is the better commit when Yes for summon/hypercarry—Sunday’s Skill Advance + CRIT buffs stay elite.. Compare signature builds, team requirements, and your existing supports before pulling either.

At a Glance

Asta
Stat
Sunday
Fire
Element
Imaginary
Harmony
Path
Harmony
4★
Rarity
5★Winner
Support
Primary role
Support
MoC: B · PF: B · AS: B
Endgame ratings
MoC: A · PF: A · AS: AWinner
SPD
Scaling focus
SPD
Fire + Harmony
Playstyle
Imaginary + HarmonyWinner
High
Team flexibility
High
Huohuo / Bronya / Lingsha
Best support shell
Sparkle / Fu Xuan / Luocha
Carve the Moon, Weave the Clouds — Accessible Harmony cone—superimpose when possible.Winner
F2P Light Cone
Carve the Moon, Weave the Clouds — Accessible Harmony cone—superimpose when possible.
Excellent
E0 viability
Excellent

Strengths & Weaknesses

Asta

Strengths
  • Ultimate “Astral Blessing” Increases SPD of all allies by 57 for 2 turn(s)—time it for the carry’s damage window instead of casting on cooldown out of habit.
  • Skill “Meteor Storm” dumps a large single-target multiplier into one elite—this is the spend that keeps the rotation honest.
  • Talent “Astrometry” implants element Weakness so Break stays online off-element—miss the stack conditions and the burst window feels empty.
Weaknesses
  • Buff windows on “Astral Blessing” are short—casting them when the carry cannot attack wastes the CRIT DMG/ATK amp for a full cycle.
  • Asta’s Skill is often the expensive part of the rotation; SP-negative teams force Basic ATKs and you lose the advance/amp that made the unit worth playing.
  • As a 4★ Harmony unit, Asta is easy to gear for early/mid game but usually loses the niche race to a modern limited option once that banner is built.

Sunday

Strengths
  • Ultimate “Ode to Caress and Cicatrix” refunds a meaningful chunk of Energy inside the Skill—time it for the carry’s damage window instead of casting on cooldown out of habit.
  • “Benison of Paper and Rites” action-advances an ally with a damage amp attached—one Skill Point buys a full extra carry turn.
  • Sunday’s memosprite/summon adds a second actor that hits and breaks without always spending the team’s Skill Points.
Weaknesses
  • Buff windows on “Ode to Caress and Cicatrix” are short—casting them when the carry cannot attack wastes the CRIT DMG/ATK amp for a full cycle.
  • Sunday’s Skill is often the expensive part of the rotation; SP-negative teams force Basic ATKs and you lose the advance/amp that made the unit worth playing.
  • Spamming “Benison of Paper and Rites” every turn without watching Skill Points strands the rest of the team—Sunday is often the SP sink.

Shared Team Members

With Asta

Huohuo covers healing (and often Energy / cleanse) so the carry can stay on-curve.

With Sunday

Huohuo covers healing (and often Energy / cleanse) so the carry can stay on-curve.

Best Builds (Signature)

Asta

Light Cone

But the Battle Isn't Over

Relics

Messenger Traversing Hackerspace (4pc) + Broken Keel (2pc)

Body

HP%

Feet

SPD

Sphere

HP%

Rope

ERR%

Substats

SPD > ERR / HP% / effect as needed

Sunday

Light Cone

A Grounded Ascent

Relics

Messenger Traversing Hackerspace (4pc) + Broken Keel (2pc)

Body

HP%

Feet

SPD

Sphere

HP%

Rope

ERR%

Substats

SPD > ERR / HP% / effect as needed

Who Should You Pull?

Asta
Pull Asta if…
  • You need a Fire Harmony unit and Asta's kit matches your account gap.
  • You prefer Support gameplay over Sunday's Support identity.
  • Situational—Asta’s team SPD Ultimate still enables Break/FUA.
  • Ultimate “Astral Blessing” is the named payoff ability for this rotation.
  • Ultimate “Astral Blessing” Increases SPD of all allies by 57 for 2 turn(s)—time it for the carry’s damage window instead of casting on cooldown out of habit.
Asta Full Guide
Sunday
Pull Sunday if…
  • You need a Imaginary Harmony unit and Sunday's kit matches your account gap.
  • You prefer Support gameplay over Asta's Support identity.
  • Yes for summon/hypercarry—Sunday’s Skill Advance + CRIT buffs stay elite.
  • Ultimate “Ode to Caress and Cicatrix” refunds a meaningful chunk of Energy inside the Skill.
  • Sunday is a stronger general pull priority for your roster.
Sunday Full Guide