Tachyon's shady new drug ☑

(Again...)

Also Dark Side of the Horse, since Scarlet calls Tachyon "Papa" (Tachyon is Scarlet's father IRL)

Kamivax said:

Also Dark Side of the Horse, since Scarlet calls Tachyon "Papa" (Tachyon is Scarlet's father IRL)

That seems to be a liberty taken by the translator.
In japanese she actually says "Tachyon-san".