In this there is a kid with a huge penis, and he is going to edo to meet his mother who he has not seen. During the journey he meets few girls like a ninja at first who tries to kill him but starts fucking him, then an amazon type woman, they also join his party to stay with him.......well thats what i remember about the starting. At the end it was like the kid turning into a giant after his mother comes to see him and then starts fucking her.

Well thats all i remember about it....not sure if its enough. 🙁
I will really appreciate if anyone can tell me the name 🙂

Maranosuke

yes, thats the one. Thanks for telling me. 😁