My Almighty Practice Space

I have a senior sister who taught me boxing, her name is Mai Shiranui! I have a teacher who taught me swordsmanship, her name is - Denisa! I have an adoptive mother who taught me magic, her name is——Irisfel von Einzbern! I have a wife who brought me the cage hand of Sekiryuutei, her name is Rias Gremory! My name is Li Yalin, I feel like I have lost my memory! Since I entered this omnipotent practice space, I found that I not only have a senior sister, a teacher, many subordinates, but even a wife and daughter?