Astian began to maintain and develop Midori since the end of 2019, always maintaining the pillars of light, fast and secure Midori, and as additional information, it respects privacy since it does not sell advertising, we do not sell user data and all our products and services are open source and auditable, Midori Web · GitLab here is our repo
Although you can use AUR packages on Manjaro, it isn’t the best scenario. I do run some, however, I know that things could go wrong. Manjaro is not Arch.