Tokyo Yamanote Boys by Rejet Art by Nagoya Uzuki 2 volumes -complete
Chihiro is chosen as the year's princess in the love tournament for Tokyo’s no. 1 High School Student. She must choose and confess among the 9 boys who came from different districts based on Tokyo's Yamanote train line.
With the scanlations available so far, the manga seems a straight up dating game. But after reading the reviews of the otome. It's not just your ordinary love confession contest. It's actually darker. It's from the same artists of Vitamin X. See the second picture above. The first photo is their manga-fied versions. I also featured the TYB on last year's 12 days of Christmas Reverse Harem.