At first, I really hated Onodera (for no reason). But after many chapters, i came to like her as a character. Especially after the chapter when they lost the locket and key. But after seeing her act so selfish. I feel disgusted. Chitoge sacrifised herself two times for Onodera and Raku. But right before Raku could meet Chitoge again, She confesses. She had so many chances, so many advantages but she wasted them all. And she confesses now of all time. But on the other hand, i think that she already knew that she will get rejected, so she confessed because this is her last chance to confess, even though she will be rejected before Raku meets Chitoge.