The growth of Oga Elzero, Elzero's failure and temporary replacement, had a vague goal at the age of 3, and began to slowly realize it at the age of 7.
On the way, he met Oona, a girl from a foreign country, and the two became friends. At the same time, he also gained the forgiveness of Tomgaro, who had abused Oga because of the "Rabbit Incident", and his willingness to advance and protect him.
In the end, he passed away at the age of 8 because he was Elzero's "failure".
"Because the goal has been... Accomplished, so, sorry, Oga... See you..."
The girl lying in Oga's arms hummed so low, her expression was completely opposite to Ona's, it was so peaceful.