Operation Love (2007)

Original title: プロポーズ大作戦

A missed confession of love haunts a young man on his best girl friend's wedding day. Sudden appearance of a mysterious Angel enables him to go back in time to regain the love of his life. Will he succeed? A romantic comedy of young Ken who missed a chance to confess his love in the past and ended up attending the wedding of his childhood love. Deep with regret as he helplessly watches the wedding party proceed, suddenly time stops and an Angel appears asking him whether he would like to just start over. Astounded as he is, Ken asks to do so, thereby embarking on a journey that will supposedly change everything. All does not go well however, as fate seems to be a resilient force that refuses to change...