In Episode 1 of "Kono Koi ni Kizuite The Animation," we are introduced to Tsujinaka, a junior office worker who has long harbored feelings for her senior colleague. When his girlfriend breaks up with him, Tsujinaka seizes the opportunity to offer comfort by inviting him out for drinks. As the evening progresses, her suppressed affection surfaces, leading her to propose becoming his new girlfriend. Taking advantage of the situation, she persuades him to accompany her to a love hotel, where their relationship takes a more intimate turn.