>Sparkle is not in the event
>Lancer never died
>trailer shows 10-second Archer fight scene, but in-game it's just a brief 0.5-second blade exchange before they team up again
>50% of the event is in ugly vintage filter

I love Honkai: Hype Rails.
Why stop at UBW? Just toss in the whole Tsukihime cast, maybe sprinkle in some Primsa Illya while you're at it.
Who cares if those characters aren’t even in the game and only show up in the trailer, as long as it goes viral, right?