SPRD-434 Mama, a housewife who is followed and targeted on her mamachari (mama's bicycle) - Rinko Kawaguchi

Rinko, a housewife, rides her mamachari down the street. A young man watches her ride with a mysterious look from behind... He had played pranks on her mamachari in the past, and this time too he was indulging in fantasies as he sniffed the saddle she sat on. The next day, after shopping at the supermarket, Rinko encounters some delinquent young men crowding around her mamachari. After they steal her saddle, Rinko begs them to return it, even though she does as they say. However, when the saddle comes back, it has a sinister, erect object attached to it...