Honjitsu Wa Taian Nari (2012)

Takako is a wedding planner who has to deal with five weddings at the same venue on a lucky day, but on that morning, a threatening letter arrives demanding that all the ceremonies be canceled. She frantically tries to find the culprit while working to keep the wedding schedule without delay. Meanwhile, the secrets that each of the couples have been hiding come to light one by one.