"Me, living together with him as his 'twin sister'⁉️"

This is sudden, but I gained a twin sister. However, she's actually my boyfriend... or should I say girlfriend now? She's my sister too, but... My one-room apartment where I lived alone feels cramped with two people, but sleeping together in the same bed, holding each other, makes me happy. Being woken up by a kiss is such a luxury... We're sisters now. It shouldn't be like this... and yet... Still holding onto my anxiety, we go on dates today as lovers. --- This is a participant work in shiina Kokomisan's "Sugar Candy Love Story Project." (Though it's TS yuri.) I also decided to participate in Fujino Sumire Nori's "Valentine Love Colors 2" project. Also, like many of my previous works, the protagonist is from Hakui City, Ishikawa Prefecture. This time, since the Noto Peninsula earthquake occurred, I touched upon it slightly, but the serious aspects don't appear in the story.