thank you for the chapter, but wait who has he been been killing? Also I keep getting the feeling that Godai isn't the only person he sends on these trips or he's done it to himself.... That could be the twist later on regarding his kill count that he's able to send himself into killers in the past and basically bot them and "steal" their kills. Or its just stuff he does in the future. But I get the feeling that while he is tutoring Godai he's also treating it like a competition and using Godai to nerf the kill counts out of other infamous killers his "peers" thus both "stealing" their kills from them reducing their totals while also making his more impressive. It would also explain his acquiring trophies from the killers he's used Godai to thwart.
I keep expecting a case were a young Haru meets a young Hidaki.