Kimi to Koi no Tochuu
Just when I thought it'd start with you, you disappeared; I would've never thought this...
Yuna has lost trust in love after her first boyfriend Takumi broke up with her. Shiina-kun from her class has already confessed to her twice and now finally she approached onto love another time. But Takumi appears in front of her!! What will the swaying Yuna do!?
(Source: Chibi Manga)
Contains a side story in volume 1 (from the perspective of Takumi), and two oneshots in volume 3.