Is It Reasonable for My Senior Brother to Become My Cursed Spirit After His Death?

Also known as "Zhenyi traveled through the world of magic and discovered similar people?" ! My wife, Zenitsu, is male and loves women. She killed her senior brother who turned into a ghost in Infinite City. From then on, everything about his life changed. Yue Yue, a male, turned into a cursed spirit after being killed by his good-for-nothing junior brother in Infinite City? ! Intention: time travel