Honkai Star Rail: Sunday Best Build Guide

Sunday is the newest character to join the Honkai: Star Rail roster and is a powerful support that can level up your other characters that use familiars. In this guide, we’ll go over a short overview of the character and what he does while also giving you build suggestions on how to prepare him for your teams.

Sunday Overview

	Name	Sunday
	Rarity	5-star
	Element	Imaginary
	Path	Harmony
	VA	Otsuka Takeo (JP)
Feixiao Stats for Level 80
HP		1242
ATK		640
DEF		533
Speed		96

Sunday is a limited 5-star character from the Imaginary element that follows the Path of Harmony. He is a ridiculously powerful support that gives a 100% Action Advance boost to both characters and their summoned entities, making him a great support for characters like Jing Yuan and Topaz. Overall, he is a similar character to Bronya, but without the drawbacks. He is more SP-positive than Bronya and can also provide Energy with his ult while also giving a decent CRIT DMG buff. He is a powerful support not only for summoner characters but for other characters as well.

He is an all-around supporter capable of increasing CRIT DMG and CRIT Rate, providing Energy, and manipulating the action order of allies, all while being SP-positive. This makes him one of the best support units in the game, outshining the likes of Bronya.

Sunday Best Light Cones

For Sunday’s Light Cones, the best pick is without a doubt his signature light cone, [A Grounded Ascent]. This light cone provides Sunday with the Energy he needs to reliably cast his ultimate while also increasing the overall DMG by one ally by up to 45%. Lastly, it also helps with Skill Point management, making it a great pick. But worry not; even if you do not decide to go for it, there are other choices you can use on him to still make him work.

Rank	Light Cone	Effect
1	A Grounded Ascent	After the wearer uses Skill or Ultimate on one ally character, the wearer regenerates 6 Energy and the ability's target receives 1 stack of "Hymn" for 3 turn(s), stacking up to 3 time(s). Each stack of "Hymn" increases its holder's DMG dealt by 15%. After every 2 instance(s) of Skill or Ultimate the wearer uses on one ally character, recovers 1 Skill Point.
2	But the Battle Isn't Over	Increases the wearer's Energy Regeneration Rate by 10% and regenerates 1 Skill Point when the wearer uses their Ultimate on an ally. This effect can be triggered once after every 2 uses of the wearer's Ultimate. When the wearer uses their Skill, the next ally taking action (except the wearer) deals 30% more DMG for 1 turn(s).
FREE TO PLAY
3	Past and Future	When the wearer uses their Skill, the next ally taking action (except the wearer) deals 16% increased DMG for 1 turn(s).

Sunday Best Relics

When it comes to relics, your best bet is focusing on the 4-piece Sacerdos’ Relived Ordeal coupled with two pieces of Lushaka, the Sunken Seas planetary set. These sets further help with Sunday’s support utility and energy needs.

Relic Set
Sacerdos' Relived Ordeal x4
MAIN STATS
Body	Feet
CRIT DMG	Speed
Substat priority
SPD > CRIT DMG > Effect RES% > HP% / DEF%
Planetary Set
Lushaka, the Sunken Seas x2
Main Stats
Phanar Sphere	Link Rope
HP% / DEF%	Energy Regeneration
Substat priority
SPD > CRIT DMG > Effect RES% > HP% / DEF%

Skill Priority

Sunday doesn’t really have one skill that needs to be leveled first but rather focuses on having all of his tools leveled simultaneously. This means you’ll want to focus on leveling all three of his Skill, Ultimate, and Talent at the same time while leaving his Basic Attack for last. As for Major Traces, you want to prioritize his A2, followed by his A4, and lastly A6.