Sunday has arrived as Honkai Star Rail’s premier Harmony support, leaving players wondering: should you invest in his first Eidolon (E1) or Signature Light Cone (S1)? This decision can dramatically impact your account’s efficiency, especially with limited Stellar Jades. Let’s break down which investment delivers maximum value for your playstyle.
Table of Contents
Honkai Star Rail Comparison Table
| Feature | E1 (Faith Outstrips Frailty) | S1 (A Grounded Ascent) |
|---|---|---|
| Primary Benefit | DEF Ignore: 16-40% | +8 Energy per Hymn stack |
| Best For | Summon-based teams | Hypercarry consistency |
| MoC Cycle Time | ~7.5 cycles | ~7.2 cycles |
| F2P Viability | Luxury upgrade | Luxury upgrade |
E1: The Summon Specialist
Sunday’s E1 delivers defense penetration for summon teams. Standard targets receive 16% DEF ignore, while summons enjoy 40% DEF shred. This transforms Jing Yuan and Lingsha into devastating damage dealers, making it future-proof for summon-heavy rosters.
S1: Consistency King
“A Grounded Ascent” provides 8 Energy per Hymn stack and 24% damage bonus, achieving faster rotations. However, the gap versus free 4-star “But the Battle Isn’t Over” is just 0.74 cycles—minimal for the investment.
The E0S0 Reality
Sunday excels at E0S0 with 4-star Light Cones, achieving 68% success in 36-star Memory of Chaos clears. According to gacha optimization principles, neither E1 nor S1 is mandatory—both are luxury upgrades.
Investment Strategy
Choose E1 for 3+ summon characters. Pick S1 for diverse team consistency. Budget players should save Stellar Jades for upcoming DPS units rather than marginal support improvements at pity.
Frequently Asked Questions
Can Sunday perform 3-turn rotations without his Signature Light Cone?
Yes, with 134 SPD and “But the Battle Isn’t Over” S5, Sunday manages 4-turn cycles achieving 75-80% uptime—sufficient for all endgame content. True 3-turn cycles require S1 or external energy from Tingyun/Huohuo.
Is Sunday’s E1 worth it for non-summon teams?
Not particularly. E1’s DEF ignore applies 16% to standard targets versus 40% for summons, making it less impactful. Hypercarry teams benefit more from S1’s energy consistency than E1’s moderate defense shred.
