Didnt expected that... wish she would just say it. The fact she couldnt even say for Suiren only tells me shes not really ready to open her heart. That said, i had lot of hope for Koharu to also find someone good before the end. After all, from the arrogant brat in the beginning she changed and grew a lot and always put a lot of wasted effort. But well, if the author doesnt like her theres nothing to be done.