Should i prepare for heavy drama?
Not really. Pretty soft drama.
Konatsu wants to know why Koyuki called her in the first day, and Koyuki doesn't know what to answer. So Konatsu keeps thinking about what Koyuki thinks about her...and Koyuki is actually thinking the same thing.
That's why I find it hard not to become actual yuri.
I don't know what this site needs to consider a yuri tag anymore, few days ago I suggested a change on Maho Girls Precure in which Mirai and Liko totally kissed on manga and I have been denied
Think about this, though. Would you rather have a story not tagged yuri and be surprised when it turns out yuri or read a story tagged yuri and not find yuri?
Nettagyo is not tagged yuri on Coming walker (Kadokawa web reader), but it's tagged yuri on pixiv. The magazine promote the title as "Girls romance".