Solo Caelus VS Cocolia's Echo | Trailblazer Only
Been playing like this inspired by @Moosashi so please check him out and his Trailblazer Only series • Trailblazer Only in Honkai: Star Rail
This time this grind took months, pretty much since the last video I've been grinding relics and Stelar Jade. I won my 50/50 on Blade's Lightcone, so that plus food buffs and the leveled-up relics made it possible.
I'm still on my grind to see what I can do on the Cocolia Boss fight, but as Moosashi said, it will only be possible if we get a new health food buff.