Hatsukoi Losstime really did a good job with how the "loss time" thing worked so that it wasn't too confusing and was well paced. The drama wasn't too heavy in the small amount of the 9 chapters of this manga so it was just right for this type of romance story. The art really brought the entire manga together, it made it more fun to read. There were some holes in the story that were never really explained, but it didn't really affect it too much so it didn't matter I guess...The story was kind of predictable though since there has beenlots of others with a similiar premise like this and it was basically hinted at in the early chapters.
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Overall, it was good (to me of course), I enjoyed reading it.