Hanibar yeah, originally Prof He is from the parallel universe and he is a Major General, Nianzhi grows up in his family from the age of 6 till 12 ,so when she disappeared at the age of 6 he begins to search for her eveywhere when de couldn't found her he suspected that she is in the parallel world so he risked his life and come to this world to find her, but to his misfortune when he found her she didn't remember him that's why he was angry at her that day at his office coz he felt hurt.She grow up with him and followed him everywhere but when she disappeared and found her she is loving another man 😢
But later when she returned to her original world, he will found that she is his half sister...ooof that was long lol😉