beta
When he goes back .. does he retain the abilities or not ? Logically he shouldn’t since he didn t "go back" to the past but "turned back" time of what i assume is restricted to the same universe. Considering the plot and writing style, this suits the story better in my opinion.
BUT it would've being nice if it s mentioned because it s always possible that turning back time just creates an alternative universe from a past starting point... in which case he ll retain his powers.