Honestly I feel that with the story asw, like for me the plot is interesting but the way the story flows is like you said uninteresting so I'm also not coming back to this.
But as for the power thing I'd say there are some draw backs, cause unlike other time powers where the user can go back as far as they want mc here needs to save the specific time and with only four slots. like when she was deciding if she should erase the save where her dad asks her to be his daughter she had to think really hard about whether she should keep it or replace her other two important saves, Mc needs to strategies and think when to save in time and what save point isn't important. Like I can think of a few ways her save points back fires, for example she saves a second or minute before being succumbed to a poison she had no idea she took; that's one save point useless, but she also has the two other saves, one from the future(different timeline) and the other that's before she met Aiden, and let's say for the sake of the example her 4th save point is also from the future or an empty one. her only choice then is the one before she met Aiden leaving her to redo everything she worked up for at that point.
Story wise I also whish they had more built up, like it's only 25 chapters (19 for me cause that's where I am rn) but we already know black hair kid is a murderer in the future and the sister of her friend, Aiden is her bio dad, her mom and dad are divorced, and Sion remembers the past. Not to mention, her first revenge coming into the past already done, finding Aiden, mercenary guy and Aiden fighting, rescuing Mary(ifg name), having Mary's brother leave the dark side, passing the test thing to get the dukes notice, befriending a random kid. Personally I myself am not a fan of story important story points that stretch way too long than it should but the things I've mentioned that I'm guessing and seem like they should be big points into the story don't seem as important because of how quick it was solved.
Nope, I'm not feeling this one. One the art sucks. Wth is that triangle ass face for Aiden. Two, the way the artist portrays emotions. It's not about how pretty or not the art is but how the artist fail to express subtle expression of the characters. And three, the big flaw for me, is the story itself. It's too bland n uninteresting. We start with everyone liking mc, relationships already established or strong bonds right after meeting her (like the merchant) n taking care of her. It's really boring how there's no build up at all. Top of it all, her ability is too op since she can revert back whenever she wants with no consequences, so it takes away the possibility of any danger n hurdles a story should have. Anyways, dropping this.