縦書き頑張ってみるよ 作者： J88 – Trang giải trí uy tín hiện nay

Challenging enthusiasts who enjoy vertical text drawing, especially for reading novels and Aozora Bunko content. Have fun exploring the world of vertical writing with options to customize fonts, colors, and line spacing. Engage in a drag view mode, reminiscent of PDFs, allowing you to grab pages and scroll seamlessly.
For those using the Edge Scroller extension (scrolling by moving the mouse to the edge), this addon is thought to be compatible. Feel free to give it a try!

How to Use:
Open the addon in the side panel and toggle on the checkbox for vertical text mode.