recent leak from Honkai: Star Rail is hinting at a brand-new mechanic coming to the game as part of upcoming character Sunday's kit, providing unique benefits to Ultimate-focused teams. Throughout the many playable characters added to the HoYoverse sci-fi RPG's roster, the developer has experimented with a wide variety of different unique gameplay mechanics. Characters like Topaz and Dr. Ratio provide powerful incentives to teams built around follow-up attacks, while the recently released Feixiao can break an enemy's Toughness regardless of attribute. Now, one of the most highly-anticipated characters is seeing their own mechanic teased.