What can't be accepted is the form. 60/70 years old, grey haired man is transformed into kid. Ok. But why the heck is Lugh acting and thinking like kid. He forgot his whole previous identity? Why steady old hitman acts like 12yr old boy? He makes childish mistakes, losses his temper, is turning red around girls. My complain is that it didn't take much to make this 3-4/10 show into 6/10. Why there isn't his old VA as a narrator of his thoughts? Only his body is young, his soul remained the same.
We watch isekai/tensei anime to see how mc is using his old life knowledge to his or her advantage. It's rarely shown here and when it does it is in so unrealistic matter. How can we possibly believe a hitman remembers atomic mass of gold element?
One more thing. Female characters boobs are too big while brains are too flat.
