Read manga: Ashita No Tamago

manga
Artists: TACHIBANA Kaimu
Status: ongoing
Latest chapter: Vol.1 Chapter 1
Updated at: Aug 25, 2019
Summary:

Makoto Katsuya, bumps into his grandson, Yuusuke Katsuya who came from the future Tokyo by a time machine. Yuusuke explains to Makoto and the childhood friend of Makoto, Momoka Shiroishi that he needs help to save his father who was arrested on false charges.