Hi! Our team's been working on something called Sumugi by Storyboarder that's a bit like Comipo, where you use 3D characters and environments to create manga, comics, and visual stories.
Right now, most of our users are people who have their OC avatars in 3D for VTubing, VRChat purposes, but we also had a lot of feedback from mangaka and publishing editors about it being useful for storyboarding in general. For example, you can quickly test out camera angles, try different types of shots, and move speech balloons around to experiment with lettering and panel flow before committing to final art. Here are some features we have right now:
Camera — You have a free-moving camera you can position however you want: move it up, down, orbit around your characters or objects. So if you want a low-angle dramatic shot, a bird's eye view, or just need to find the right framing for a panel, you can just move the camera there instead of having to figure out how to draw the perspective.
3D environments — 60+ pre-built scenes (classrooms, cafes, arcades, interiors, etc.) with lighting controls. You can also build your own scenes, upload assets, or request them from us.
2D layout mode — Switch into 2D to arrange panels, place and move speech balloons, add SFX and filters.
Characters — Our character system uses the same format as VTubing and VRChat avatars, which means there's already a big creator community and easy-to-use design tools around them — so you don't need any 3D modeling experience to get a custom character. We also have characters ready to use on Sumugi, with 100+ preset poses, hand posing, and facial expression controls you can save and reuse.
Community — There's a social feed where you can share your stories, comment, and follow others.
We're actively building and looking for beta testers to help shape where this goes. If you're interested, please let me know so I can send you an invite code. Our website is also storyboarder.com (no download needed)