Shimatsuya Soji

In a city reduced to ruins after a great war, an old man named Souji Abaraya spends his days diligently cleaning the debris. But this man has a secret: he is actually a legendary hero from that very war... and the "strongest old man" who protects the streets from terrorists! Presented by Narita Nariaki and Kageyama Shu, this authentic SF action series is unleashed with breathtakingly powerful artwork!

https://yanmaga.jp/comics/始末屋ソウジ