Some Web frameworks such as Ruby on Rails intentionally force a specific software architecture and, as a result, called opinionated frameworks. Opinionated frameworks have several advantages: a standardized directory layout helps newbies to understand the codebase. They are also designed to guide programmers to adapt the program to the corresponding software architecture. So the codebase will be more tolerant of rapid growth. I think that such an opinionated Web framework written in Rust would accelerate Rust adoption in the Web programming area. I'm attempting to make it by myself, using existing Web frameworks as a reference. In this talk, I'd like to describe how I thought and learned during design and implementation.