Aizô no arashi: Hikisakareta shiro shitagi(愛憎の嵐 引き裂かれた白下着)

Harumi works as a planner at an event planning company. She had just been proposed to Nagata, who works for the same company, and she was enthusiastic about her first solo job. However, Harumi accidentally reunites with her ex-girlfriend's fiancé, a talented planner, Yu Hinatsu.