My Yandere Stalker Who Has Became My Step-Sister Justifies Everything She Does ~Before I Knew It, She Had Established Herself as My Legal Wife~

Yandere? No no, this is just family love so there’s nothing wrong with it, right? (Pressure) Utsumida Kotoya’s father was entering a common-law marriage. His partner was apparently a former colleague whom he had known for quite some time. While they were going to live together in a new home, his partner also had a daughter. That daughter turned out to be Fujimori Ema, Kotoya’s kouhai from middle school who had confessed to him at the graduation ceremony. Though they became step-siblings, Ema’s romantic feelings hadn’t cooled down at all, if anything, they had grown even stronger… This is a story about a step-sister who justifies her various actions under the pretext of “family love”.