Redline

A chart that takes the S18 version of the same song and expands it with some modifications. The run starts from the first verse, and while the weight-shift sections are short, the range of movement is quite wide. Also, be careful of the single-side twist-drill section that appears briefly. The stairs in the transition to the second verse and the weight-shift before the highlight can also drain your gauge. The highlight run in the second verse is half half-note and the other half is a somewhat complex weight-shift twist run; the half-note section features a 6-half that is quite difficult to read even for D20 players, and the key is to use your heels well. The final kill starts with a feel of axis-drill and then consists of a weight-shift run with twists + stairs. Overall, the stamina and leg strength requirements are significant, and above all, there are placements throughout that are hard to see at the D20 level, making it difficult for locals to clear. The all-perfect clear difficulty is D20 high, but it wouldn't be strange if it were in D20 or D21. If you want to improve your note reading, try it as an all-perfect at the D21 local level.

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real rough fella stamina-wise (hyperion-tier), there's more mini-breaks but a death run at the end

Requires quite a bit of stamina. Even if you're a high-level player who knows the path, it's a 170 BPM run that lasts quite a while in the second half, so you need to have your basic stamina in check before playing.