About: Tachi is rumored to be a great Hero of a different world, but nobody knows his true story. Rumored to be cold and apathetic, and even disinterested in fucking, many believe that his summoning to the sex-fueled Haremverse is a breaking of the rules, as this sexy swordsman seems to prefer to polish his blade over dicks. However, he seems to be interested in joining you on a mission… Maybe you can change his mind about sex?
Parody Info: Kojiro Sasaki (Fate/Stay Night)
He wears the same kimono as Kojiro but is green and rather open, which is likely based on Kojiro's Stage 3 Ascension look, and other thing that is not similarly purple is his hair, as Tachi has silver hair. Like his parody source that is just an unknown swordman but is the closest to the mythical Kojiro Sasaki — who never existed, so is Tachi who's also an unrecognized swordsman, though he's likely the real legendary person and not just the personification of a myth.