Already said this before, but all that will happen between them are kissing and teaching Eliza how to confess. Please try to read the previous posts. Thank you.
If it doesn't go beyond kisses, it's not that I care too much. Possibly it still bothered me a bit that Eliza, who had shown enormous interest in the MC (basically, she has been in love with him for two years), accepted these lessons so easily, at least the practical part (I prefer Eliza had given the MC her first kiss, but what's done is done, at least it will be her first kiss with a guy), but if they don't go beyond kissing, it's not a problem either (If they continue the lessons, that after playing that part again I'm not sure)
After replaying the Kana and Eliza conversation, I think my first impression was worse of how the conversation really goes (possibly influenced by prejudice from previous lessons).