I've seen these comma-like marks above kanji/kana in Japanese novels a few times, but I have no idea what they're called or their purpose:
I tried looking online and I haven't found anything (it's pretty hard to find out when I don't even know what they're called).
I've seen them appear in various contexts before, once I saw it in a novel where the speaker was announcing someone's name (in a formal setting), another time I saw it in a different novel when the speaker was in despair and they were talking about giving up on everything.
I'm very curious about this, can anyone explain what these marks are?