Well guys, this anime based on the Dengeki Bunko light novel series by Shihon Takamura is a bit complicated as the Jinguji twins, Rumi and Naori, have been in love with Jun Shirasaki ever since they met him as children.
By the way, this is not Kiss x Sis as I see Koi wa Futago de Warikirenai or Love Is Indivisible by Twins which is a serious story about a love triangle between twins and a boy.
And it all started when her twin sister Rumi decided to date Jun Shirasaki in middle school and he accepted her confession.
Although they have known each other since childhood, it is surprising that Jun becomes Rumi's boyfriend instead of being hesitant in accepting a girl's feelings.
But yes, both Rumi Jinguji and Jun Hirosaki became lovers during their junior high school years. While the latter was quite happy to have Rumi by his side, the former had other thoughts.
Rumi has definitely loved Jun for a long time, but it seems like she has some regrets about dating her childhood friend because someone else is in love with Shirasaki.
And that would be Naori, her soulmate and twin sister. Although she knows more about pop culture, Naori is still a cute girl who has feelings for Jun.
As for Rumi, she felt guilty for taking Jun away from Naori and thus Rumi did the unthinkable.
And that will break-with Hirosaki, in which Jun is shocked by Rumi Jinguji's sudden decision.
While Rumi breaking up with Jun was for Naori's sake, I feel sorry for Hirosaki because he can become hesitant to accept someone's close feelings.
But let's move on to the present where life continues between Jun Hirosaki and the Jinguji twins. While Jun's heart is still closed due to Rumi breaking up with him, their love triangle is just beginning.
That being said, I'm really looking forward to the next episode of this show because I want to know which girl will win Jun's heart, even though one of the twins will end up breaking her heart.
But you know what, I think the best choice would be for Hirosaki to go the three-way route instead of choosing Rumi or Naori.