Hatsu Inu The Animation  

A Strange Kind of Woman, hatsuinu, 초견 이상한 여자의 종류, Strange Kind of Woman, 初犬 The Animation

It seems like Fukaya has recently become involved with a quiet and attractive girl named Fujino. Despite their passionate relationship, he can't help but feel insecure about her attachment to her vibrator. Their romance began when he noticed her using it on a crowded train. Although they enjoy having sex together, he worries that she may not truly love him and feels threatened by the fact that she always carries her vibrator with her. Today, they are planning to visit a pool, where Fukaya expects them to be alone without their vibrators.