Name: Henyoku no Labyrinth
Author & Artist: KUMAGAI Kyoko
Chapters: 21
(ongoing)
Genres: Romance , School Life, Shoujo, Supernatural
Plot:
The story follows a love struck girl who is unfortunately in love with her sister's boyfriend, Hiroto. After her feelings are found out by the couple, she thinks her life is over... That is until she receives a magical key that allows her to travel back in time. Miyako is determined to use this second chance to confess to Hiroto before he develops feelings for her sister. Will this be second encounter be fruitful or will she discover that there are some things that simply can't be changed?
Overview:
Oh boy, I had to write the plot for you guys since the sypnosis on most sites is either non-existent or simply vague. Anyway, I don't make it a habit of picking up manga that is under 20 chapters since waiting for chapters is antagonizing (having the same problem with Rokka Melt by Toma Rei).
I'm currently addicted to this and though it seemed like it was going to be a short and typical story of: girl meets boy, falls in love, angst/complications, big confession scene and then happily ever after,
it actually has a fairly compelling story.