@Tcof Hmmm, true. Then again, the title of the official release is Good luck, co-worker (unless, assuming that the girls are the same age, it's from one to another, but given their personalities, seems unlikely) Senpai is mine on the other hand, can be from the explicit kouhai as she literally says that in one chapter and it suits her character, and can also be from the other girl, since she is aware that "kouhai is after senpai, but "senpai"/"he" is mineeeee" kind of way which also suits her character
@dojinshi well, this chapter, for one? The junior said, senpai felt sick so she isn't coming today
I went back to read ch6, the main girl said, Oh i see you made your coworker (douki) get drinks while looking at cute pictures of your kouhai, so I don't get where you're coming from
@Ke_Zunjian Both are unnamed as far as I'm concerned, so I'll call explicit junior kouhai and implied MC (senpai) love interest douki cuz that's how I've been interpreting this manga
From what I can tell, Kouhai works in a different section from douki and senpai. kouhai sends senpai a picture of herself dressed as a maid to senpai, and douki catches him reading the message after coming back with their drinks. Douki gets jelly and obtains a maid outfit as well and plays around with it pretending to outdo kouhai in her mind, then accidentally send the photo to senpai