Ruan Mei vs Sunday
Ruan Mei vs Sunday — two Harmony characters competing for the same roster slot.
TL;DR — Quick Pick
Pick Ruan Mei if…
- You need a Ice Harmony unit and Ruan Mei's kit matches your account gap.
- You prefer Support gameplay over Sunday's Support identity.
- Yes—Ruan Mei is still a top Break/universal Harmony.
Pick Sunday if…
- You need a Imaginary Harmony unit and Sunday's kit matches your account gap.
- You prefer Support gameplay over Ruan Mei's Support identity.
- Yes for summon/hypercarry—Sunday’s Skill Advance + CRIT buffs stay elite.
Ruan Mei and Sunday are both Harmony investments that answer different account needs. Ruan Mei (Ice, Support) shines when Yes—Ruan Mei is still a top Break/universal Harmony.. 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
Strengths & Weaknesses
Ruan Mei
- Ultimate “Petals to Stream, Repose in Dream” Ruan Mei deploys a Zone that lasts for 2 turns—time it for the carry’s damage window instead of casting on cooldown out of habit.
- Skill “String Sings Slow Swirls” After using her Skill, Ruan Mei gains Overtone, lasting for 3 turn(s)—this is the spend that keeps the rotation honest.
- Talent “Somatotypical Helix” Increases SPD by 11.0% for all teammates (i.e., excluding this unit)—ignore it and Ruan Mei plays like a worse generic Harmony unit.
- Buff windows on “Petals to Stream, Repose in Dream” are short—casting them when the carry cannot attack wastes the CRIT DMG/ATK amp for a full cycle.
- Ruan Mei’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 “String Sings Slow Swirls” every turn without watching Skill Points strands the rest of the team—Ruan Mei is often the SP sink.
Sunday
- 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.
- 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 Ruan Mei
Castorice is the damage seat in this shell — build the supports around their rotation, not the reverse.
With Sunday
Castorice is the damage seat in this shell — build the supports around their rotation, not the reverse.
With Ruan Mei
Hyacine is the damage seat in this shell — build the supports around their rotation, not the reverse.
With Sunday
Hyacine is the damage seat in this shell — build the supports around their rotation, not the reverse.
With Ruan Mei
Luocha covers HP / memosprite upkeep so the Remembrance loop does not collapse mid-wave.
With Sunday
Luocha covers HP / memosprite upkeep so the Remembrance loop does not collapse mid-wave.
With Ruan Mei
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)
Light Cone
Past Self in Mirror
Relics
Messenger Traversing Hackerspace (4pc) + Broken Keel (2pc)
Body
HP%
Feet
SPD
Sphere
HP%
Rope
ERR%
Substats
SPD > ERR / HP% / effect as needed
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?
- You need a Ice Harmony unit and Ruan Mei's kit matches your account gap.
- You prefer Support gameplay over Sunday's Support identity.
- Yes—Ruan Mei is still a top Break/universal Harmony.
- Ultimate “Petals to Stream, Repose in Dream” deploys a team Zone with RES PEN / Break-oriented amp.
- Ruan Mei is a stronger general pull priority for your roster.
- You need a Imaginary Harmony unit and Sunday's kit matches your account gap.
- You prefer Support gameplay over Ruan Mei'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.