Board Thread:Questions and Answers/@comment-45660847-20200501213552/@comment-39718735-20200628035027

I have doubts now about this... could Kira get BtD on his own? I mean he had an A in dev. potential. Perhaps the arrow just forced out that potential (Imagine the arrow hitting Koichi a second time and getting Echoes Act 3 by the time he only had Act 1 or 2; or hitting Jotaro and forcing him to develop Time Stop almost at the beginning of part 3).

There's also how unrelated to his main special powers rewinding time an hour is: Time Stop is the main special ability of Star Platinum (in the same way giving life is this for GER or healing is this for CD) so him obtaining it still counts, And Echoes Act 2 and 3 are still related to the same ability of Act 1.

Requiem on the other side is a power that's impossible to reach for it's user naturally or without using the arrow a second time...

as far as we know...

Given the little info regarding so, it may be three things A) an ability Kira could always develop B) an ability that could only be developed with an arrow hitting the user or C)... a Requiem ability (since we don't know very much about them, KQ was occupying the same phyiscal place than Kira, and it works in similar ways (user gets new powers specifically tailored for a specific ocassion)).