I dunno what it is called

the story about time loop where the MC try to save her sister for getting experimented and got some message from someone on his web blog about the future that gonna happens. It developed till he dates several girls because of the blog.

First loop , he go date with his childhood friend and then her sister abducted

failed

he go to second loop, he go with another girl(friend in class), it also failed, her sister abducted

the third loop was successful, dating a new transfer student called bungo. MC then replace her sister position on experiment and somewhat it success and the role got reversed where the sister got the future web blog thing and save his brother.

Later it got explained that MC parents created like some dimension thing using machine, and they both use special machine to enter it. They then disappered, and the fellow scientics, try to find replacment and that was the MC sister.

The machine then developed ai called bungo and bingo

Boku to Kanojo no Renai Mokuroku?

yeah it is thanks