Can He Be Achieved in the Second Week After the First Week of Project Be?

Yu Fukitani and Hiiragi Hagiwara, who died in the explosion, traveled to the past and met their parents when they were young. But this past seems to be the past of another world. [Early Warning] The identities of the two protagonists are the sons of Rei Kage/Hagimatsu in the abo world view, and they have passed through the original work. CP is Zero King & Hagimatsu & Hiiragi Yu. There are many private settings in the abo world, and the tone is dark, so I won't describe it too much. The world of the original work is about daily life, and the police academy team rescues Mingmei. Purpose: Working hard for Happy Ending