Their relationship alrdy sealed ...but both not are not rushing type ..and both learn in hard way thru their parents on how rushed relationship can be broken downNah, no doubt it was real. Anyway, it's not guaranteed that their relationship is sealed and official just because of a kiss. But I'll bet a chapter or dozens more will dwell on that kiss.
Hopefully this ends in the next chapter or two but here’s how I think it will go. Dad seems like he’ll be chill about their relationship but mom will disapprove or be saddened. Feeling guilty for actually betraying her mom’s feelings, Saki breaks off their relationship. She gets into the women’s university and the professor turns her into a lesbian.