Okay I thought this would be as simple as he sets up the matching app thingy and suddenly because of whatever circumstances the girls are pulled into his world. What's with the time travel? Why's with the time travel? Why now? Was that girl at the women's university campus her present future self or past present self? All of these questions will probably give steam for the next few chapters, but with a premise like "my wives just popped up" hopefully the story has something in store to make it not boring.