Harmony Light Cones (5★) Weapon Comparison
Past Self in Mirror vs Flowing Nightglow
Past Self in Mirror is 5★ (Ruan Mei signature) and best on Ruan Mei, Harmony buffers. Flowing Nightglow is 5★ (Robin signature) and best on Robin, team-wide buffers. Both are Harmony Light Cones (5★) options for the game in 2026.
Best On
Rarity
🎯 Verdict
Use Past Self in Mirror if you main Ruan Mei, Harmony buffers; choose Flowing Nightglow for Robin, team-wide buffers. Signature weapons typically beat 4★ alternatives by ~10–20%, but a new Character is usually the better pull.
Which One Should You Choose?
Use Past Self in Mirror if you main Ruan Mei, Harmony buffers; choose Flowing Nightglow for Robin, team-wide buffers. Signature weapons typically beat 4★ alternatives by ~10–20%, but a new Character is usually the better pull.
Consider your account when deciding. Look at the units and weapons you already own, the teams you already have built, and the content you struggle with most. Both Past Self in Mirror and Flowing Nightglow are strong — the right choice depends on which fills a bigger gap in your roster.
Frequently Asked Questions
Is Past Self in Mirror or Flowing Nightglow better?
There is no universal answer — Past Self in Mirror wins in Best On and Rarity scenarios where their kit shines, while Flowing Nightglow is stronger in others. Use the comparison tables above to match each option's strengths to your specific needs.
Which one is better for F2P players?
Both options are viable at base constellation with their F2P alternatives. Check each option's dedicated guide for the best budget builds and teams to see which one fits your account's current roster.