We have the first trailer for Overflow anime , adapted from the Overflow adult manga ~Iretara Ofureru Kyōdai no Kimochi~ by Kaiduka. Official Website
The series arrives on TV on January 5, 2020.
Therefore, the series will have two versions called the “standard version” and an explicit “complete version”. The “standard version” will be broadcast on television, later the “full version” for adults will be broadcast on the ComicFesta .
Finally Overflow ~Iretara Ofureru Kyōdai no Kimochi~ by Kaiduka had a volume released by Suiseisha in October 2018.
Via: OtakuPT