Mashiro is a Diaper Slave (Pixiv:April 7, 2019) (Patreon)

    Mashiro was gradually taught by Mayura how good diapers feel.  Despite her embarrassment, Mashiro seems to be unable to beat the feeling of diapers and peeing.  Now, even when Hakuya and Kobeni are not on a date, she goes to Mayura's house to play with them.