Photoshop, at its core, is an image editor. It has limited text functions and does not include a dialog for "Underline Options". Here is how it works in InDesign — you can adjust the Offset to position the underline higher or lower as well as change the thickness (weight) and other things.
Yes, I'm familiar with these capabilities in Indesign. Unfortunately, I'm not the one who created these files. I'm only helping in part of a long ongoing process. These are the files recieved from the client and I don't have the option of working in Indesign.
Strangely, when using both Noto Sans and Noto Sans JP in Illustrator, if underlined, they appear exactly the same. The underline is positioned consistently between both fonts. Only having the issue in Photoshop.
One workaround I started using was to copy the text into Illustrator and then bring it back in to Photoshop as smart objects, but with some files I'm dealing with, that option is not a good one and just leads to further complications.
The only option I'm left with at this point is to manually create lines under the text, which is super time consuming and I'm also afraid that text flow will at some point change (after review) and some underlines, since they won't flow together with the text, will eventually be misplaced. 😞