Yes its called TokiKake for a specific reason, to differentiate it from the Toki wo Kakeru Shoujo manga released earlier.
Is there a difference? Yes. In the MC of the story. In this its Makoto, in that its her aunt Kazuto.
I'll touch on the other manga later on, but first, TokiKake.
Story: 7/10. The concept of time leaping is interesting, but the pacing of the entire manga felt rather rushed. At the end I was left with a feeling of 'Was that all?' Not the best feeling, but that has to do with the pacing. But even when it comes to raw content there isn't much to really be impressed. Maybe its because the manga was based on the movie, and hence is a more condensed version to hopefully get people to watch the movie. But the point stands that I was left teased and its extremely frustrating. Now if the manga were slightly more slower paced, with the character really coming to grasp with her powers, and more character development, then maybe it would have been better, but then it wouldn't be the same.
One thing I found weird was the aunt's open attitude towards the MC's powers, as if it was normal. Then again, she herself had experienced time leaping powers earlier. Of course I only found that out later when I picked up the original manga, and I'll go a little into the difference between the manga and the original in the last few pages of the TokiKake manga.
Also, regarding the orange-haired guy (Chiaki), what was his actual purpose there? It was never explained. There were a number of small plot holes that were also left unexplained (like the painting Kazuto is restoring as well as the machine that allows for time leaping) and it really bugs me how there isn't an answer for it, at least in the manga.
Art: 7/10. Not much to complain, the linework was normal. Nothing too special, nothing too bad.
Character: 8/10. I enjoyed the little dilemmas that the MC has, and the fact that her actions actually have repercussions that she herself is affected by. Especially the whole confession scene(s), I felt sad. I won't lie I actually teared up a bit. Quite a few times. Maybe I'm just a sucker for tragic love, but that's what happened. The MC's friends too have their own purpose. Orange-haired guy (Chiaki) was the mysterious one, and the big buff guy (Tsuda) was the helpful one, with the aunt providing advice here and there. I like how she never really gave a straightforward answer, but let Makoto learn for herself the effects of her powers.
Enjoyment: 8/10. I like how I was affected by the mood of some parts of the story, and interested in Makoto's time leaping adventures, but ultimately the plot holes left me pretty frustrated.
Overall: 8/10. The story is fine, the original is better, and so is the movie. Ultimately, I can't really find a reason to read this, unless you have some free time, or want to get a brief summary of what happens in the movie, and to hype yourself up for that.
--
Extras:
I want to get this off my chest. The last few pages of the manga, after its done with Makoto's arc, switches to the aunt's arc when she was in high school too.
Now, the guy she fell for, like in Makoto's case, is a time traveler, but without prior knowledge about her arc, the mini-section makes little sense.
From here on out its gonna be spoilers, I guess. So beware if you haven't read the original.
Now, what annoys me the most is that in this version, she has a countdown just like Makoto, and she didn't wanna use it because she had the memory of the guy she loved. The thing is, he erased her memory, so in the end did she regain it back or was it lost?
Also, she never had the counter in the original. In fact, the entire encounter happened pretty differently. The guy she fell for was a time traveler who was experimenting on the possibility of transporting people, but his supervisor came back to retrieve him since he was messing with Kazuto's memories and this caused untold consequences. The reason for this was because he was wavering through different eras and had to rebuild the time travelling drug. When he met Kazuto, I think she inherited the power to travel through time, and he was trying to get her to willingly travel to the future, not the past. In order to do this, he implanted memories into her that he was actually a childhood friend, not some stranger.
However, she accepted this all and promised to wait for him to complete his experiment, and then he would return for her. Then he wiped her memories completely and she was left at the instance where the both of them met for the first time. However, she was left with the feeling that someone important (him) would return.
In short the difference is that in the original she had the power to time travel, but she just forgot about it, while in TokiKake she chose not to time leap.
