​Introduction and Guide for Sunday in Honkai: Star Rail

In the richly - detailed universe of Honkai: Star Rail, Sunday has emerged as a character that brings a unique set of skills and a distinct charm to the game. As a 5 - star Imaginary - element character following the Path of Harmony, he plays a crucial role in supporting and buffing the team. This guide will comprehensively introduce Sunday, covering his background, skills, cultivation strategies, and team - building ideas.

I. Character Background

Sunday is a member of the Celestial Ring Clan. His head is adorned with a halo and ear - feathers, which were humorously nicknamed "chicken - wing boy" by Hanabi due to their shape. He holds significant positions within the game world. He is responsible for the affairs of "Family" Pinocchio and serves as the head of the Oak family line. Additionally, he is the host of the Harmony Festival and the older brother of Robin. His complex role and relationships add depth to the game's lore and his character development.

II. Skill Mechanism Analysis

Basic Attack - Gleaming Admonition

This is a single - target attack. It deals Imaginary DMG equal to a certain percentage of Sunday's ATK to a single - target enemy. Each use also gains 20 energy and contributes 10 to the enemy's break gauge. While it may not be his most powerful skill, it is a fundamental part of his combat rotation, especially in situations where energy needs to be gradually accumulated.

Skill - Benison of Paper and Rites

This is a support - type skill. It enables one designated ally character and their summon (if any) to immediately take action, which is a powerful effect for optimizing the team's turn - order and damage output rhythm. It also increases their DMG dealt by a certain percentage. If the target has a summon, the dealt - DMG increase is further boosted by an additional percentage, and this buff lasts for 2 turns. After using the skill on the "beatified" (the target of his ultimate), Sunday recovers 1 skill point. However, when using this ability on characters following the Path of Harmony, the immediate - action effect cannot be triggered.

Ultimate - Ode to Caress and Cicatrix

With an energy cost of 130, this ultimate is a significant support tool. It regenerates energy by 20% of the max energy for one designated ally character and turns the target and their summon into "the beatified." "The beatified" have their CRIT DMG increased by an amount equal to a certain percentage of Sunday's CRIT DMG plus an additional fixed percentage. At the start of Sunday's each turn, the duration of "the beatified" decreases by 1 turn, and it lasts for a total of 3 turns. It only takes effect on the most recent target of the ultimate (excluding Sunday himself). Notably, when Sunday is knocked down, "the beatified" will also be dispelled.

Talent - The Sorrowing Body

This talent enhances his support capabilities. When using the skill, it increases the target's CRIT rate by a certain percentage, lasting for 3 turns. This crit - rate boost can significantly enhance the damage output of the target ally, especially in combination with the other buffs provided by Sunday.

Technique - The Glorious Mysteries

After using this technique, the first time Sunday uses an ability on an ally target in the next battle, the target's DMG dealt increases by 50%, lasting for 2 turns. This provides an early - battle advantage, allowing the team to deal more damage right from the start.

Traces

• Major Traces:

• A2 - Rest Day's Longing: When using the ultimate, if the energy regenerated for the target is less than 40, it increases the regenerated energy to 40. This ensures a more stable energy - supply for the target ally.

• A4 - Exalted Sweep: When the battle starts, Sunday regenerates 25 energy, which helps him reach his ultimate faster in the early stages of the battle.

• A6 - Haven in Palm: When using the skill, it dispels 1 debuff from the target, protecting the ally from negative effects and ensuring they can act effectively.

• Minor Traces: These provide various stat bonuses such as +37.3% CRIT DMG, +18% effect res, and +12.5% DEF, further enhancing Sunday's overall combat capabilities.

Eidolons

• E1 - Millennium's Quietus: When Sunday uses the skill, the target character can ignore 16% of the enemy target's DEF to deal damage, and their summon can ignore 40% of the enemy target's DEF to deal damage, lasting for 2 turns. This is a significant boost to the damage output of the target and their summon.

• E2 - Faith Outstrips Frailty: After the first use of the ultimate, he recovers 2 skill points, and the DMG dealt by "the beatified" increases by 30%. This helps with the team's skill - point management and damage output.

• E3 - Hermitage of Thorns: Increases the ultimate - skill level by 2 (up to a maximum of lv. 15) and the basic - attack level by 1 (up to a maximum of lv. 10), enhancing the power of these skills.

• E4 - Sculpture's Preamble: When the turn starts, regenerates 8 energy, contributing to his energy - recharge and making it easier to use his ultimate more frequently.

• E5 - Paper Raft in Silver Bay: Increases the skill level by 2 (up to a maximum of lv. 15) and the talent level by 2 (up to a maximum of lv. 15), further strengthening his support abilities.

• E6 - Dawn of Sidereal Cacophony: The talent's CRIT - rate boost effect becomes stackable up to 3 times, and the talent's duration increases by 1 turn. When Sunday uses the ultimate, he can also apply the talent's CRIT - rate boost effect to the target. When the talent's CRIT - rate boost takes effect and the target's CRIT rate exceeds 100%, every 1% of excess CRIT rate increases CRIT DMG by 2%. This greatly enhances the damage - dealing potential of the target ally.

III. Cultivation Strategies

Light Cone Selection

• Exclusive Light Cone (Preferred): His exclusive light cone is highly recommended as it can ensure a stable 3 - turn - 1 - ultimate cycle for Sunday, keeping the buffs continuous. It may offer bonuses related to his energy - recharge, damage - buffing abilities, or action - advance effects, which are crucial for his role as a support character.

• Alternative Light Cones: If the exclusive light cone is not available, light cones that provide energy - recharge rate, attack - power bonuses, or effects related to his support skills can be considered. For example, some light cones can increase his energy - recharge rate, helping him reach the 130 - energy requirement for his ultimate more quickly.

Relic Selection

• Outer Relic Set: The "Priest of the Repeated Journey" set is highly recommended. It increases his speed, which is beneficial for his action - advance and support role. Additionally, it can provide additional CRIT DMG bonus to the main DPS, enhancing the team's overall damage output.

• Inner Relic Set: If not using the exclusive light cone, the "Rushalka of the Sunken Sea" set can be a good choice. It increases energy - recharge and also boosts the main DPS's ATK. If using the exclusive light cone, "Rushalka of the Sunken Sea", "The Broken Dragon's Bone", and "The Xianzhou of the Immortals" can all support a stable 3 - turn - 1 - ultimate cycle.

• Speed Consideration: Sunday's speed should be slightly lower than the main DPS. This allows him to pull the main DPS's action immediately after the main DPS's turn, maximizing the buff - receiving time and damage output. For some low - speed main DPS, Sunday can stack his speed to 160+ to ensure efficient pulling.

Eidolon Priorities

• E1: This eidolon is a great choice, especially for teams with summon - using characters. The DEF - ignoring effect for the target and their summon can significantly increase the damage output.

• E2: It helps with the team's skill - point management, which is crucial for maintaining a smooth combat rhythm, especially considering the high skill - point consumption of support characters like Sunday.

• E6: For players aiming for a more powerful support, E6 can greatly enhance the damage - dealing potential of the main DPS by stacking the crit - rate boost and converting excess crit - rate into crit - damage.

Skill Upgrade Order

• Ultimate: As the ultimate provides significant energy - recharge and crit - damage buffs to the target ally, it should be prioritized for upgrade to increase the amount of energy regenerated and the crit - damage boost percentage.

• Skill: The skill is essential for action - advance and damage - buffing. Upgrading it can enhance the damage - increase percentage and ensure more reliable action - advance effects.

• Talent: Upgrading the talent can increase the crit - rate boost percentage and its stackability (if applicable), further enhancing the damage output of the target ally.

IV. Team - Building Ideas

Sunday + Summon - Using DPS + Support + Healer

• Summon - Using DPS: Characters like Jing Yuan, who rely on summons for damage output, can greatly benefit from Sunday's skills. Sunday can boost the damage of both Jing Yuan and his summons, and the 100% action - advance effect for both the character and the summon can optimize the damage - dealing rhythm.

• Support: Other support characters that can provide additional buffs, such as attack - power buffs or debuff - application, can complement Sunday's skills. For example, a character that can reduce the enemy's DEF can further increase the damage output of the team.

• Healer: A healer is essential to keep the team alive, especially in high - difficulty battles. Characters like Bailu or Natasha can ensure the survival of the team, allowing Sunday and the DPS to focus on their offensive and support roles.

Sunday + Energy - Hungry DPS

• Energy - Hungry DPS: Characters with high - energy - cost skills, such as Fei Xiao or Acheron, can be paired with Sunday. Sunday's ultimate can provide them with energy, enabling them to use their powerful skills more frequently. This combination can be effective in dealing high - burst damage.

In conclusion, Sunday is a powerful and versatile support character in Honkai: Star Rail. By understanding his skills, cultivating him effectively, and building a suitable team, players can fully utilize his potential in battles and enjoy a more strategic and engaging gaming experience. Whether in the challenging Memory of Chaos or other in - game battles, Sunday can prove to be a valuable asset to any team.