This manga is a really mediocre harem romance because none of these characters have good chemistry. Maybe with Miku at the beginning when they talked about history there was something and with Nino when she confessed, but 90% of it all is really lacking. It all feels really shallow and these affections unbelievable and forced. It’s also really disappointing how these sisters never had a solid discussion before about the guy they all love. It’s all so indirect and pseudo-nuanced.
There is more romantic tension in Watamote and it’s not even in romance genre.