Sekai Saionji is a character from the anime School Days, who is known for her reserved personality. In this version, we see a more dangerous and possessive side to her character, as she snaps and becomes obsessive and controlling.
In this version, Sekai is so obsessed with Ehab that she wants to keep him all to herself. She goes to extreme lengths to make sure that no one else can have him, and even resorts to violence and aggression to get her way. She becomes obsessive and possessive.