These four films are "remakes" of the live action drama series based on the manga of the same name. Currently the first 2 films have been made free with Amazon Prime. The distributor has added trailers for all 4 films on their youtube channel, so I would imagine the other 2 should be added eventually.
From the amazon page:
Mirai Suzuki (Yuko Oshima) becomes responsible for her mother's debt which is owed to loan shark Kaoru Ushijima (Takayuki Yamada). To begin paying off her mother's debt, Mirai begins working at a dating cafe. Meanwhile, Jun (Kento Hayashi) is the ambitious and greedy company president for an event group. To borrow money, Jun visits Kaukau Finance owned by Kaoru Ushijima.
These are not family friendly films and contain many trauma triggers.
First movie Amazon link
Second movie Amazon link