Love Is Indivisible by Twins

恋は双子で割り切れない

Jun Shirosaki has been neighbors with twin sisters Rumi and Naori Jinguuji since he was six years old, close enough that the two families treated each other as one. Now in high school, that closeness has turned into something harder to sort out: Rumi acts tough on the outside but is quietly sentimental underneath, while Naori plays the cute otaku and hides just as much. Jun finds himself caught between two people who grew up as good as sisters to him, and neither one is willing to step back first. This manga adapts the Koi wa Futago de Warikirenai light novel.