Koba loves being in high school, others called him a kind person always helping others, fighting for the weak from bullies. Many bullies want to destroy Koba outside the school, but many of them get wreck by his brute strength and little bit of his energy, they will not bother him and the weak again, the students are cheering for him as a hero of the school, they acknowledge him as a figure who stands for the freedom of others in need. Then there is a girl Koba likes the most in High School, she is a princess from Italy name Eleanor, he sees her as a role model, but other students don't like her for many reasons.
Now entering his final year as a high school student. He wanted to confess to the student council president princess Eleanor because he she is beautiful, but is afraid that she will reject him, so he hides his feelings for her. Koba nickname her Ellie because he thinks its a cute name so she accepted it. They are friends since he entered high school. But a lot of students are avoiding her because Ellie can read minds of others, except Koba, she is wondering why she can't read his mind. The Celestial energy is surrounding Koba's body to prevent physic people from entering his mind. In the next day Ellie invited Koba to the rooftops for a meetup. Ellie confessed her feeling for Koba because he understand her so much that he accepted her for who she is. Koba also liked her, for a long time, Ellie asked why Koba to confess before her. Koba replied "if I confess before maybe you will reject me, that's why I hide my feeling for you for a long time". Ellie and Koba are now both lovers. Ellie always make lunch for her boyfriend because Koba is way too poor to buy food in the cafeteria in school, Koba is happy that she will always make him the happiest boy on earth.
In the late days of August, the great war begins, Koba is accompanied by his older brother Luther, they are about to go to school, but they are both drafted accidentally by the Russian Imperial army to fight against the German Army in the Eastern front. Luther tried saving Koba from the draft but knocked Luther out and draft him as well. Ellie is looking for Koba but she heard rumors about him getting drafted, she is shock to realize that he is going to war. She tries to find him at his home but only find his Uncle and Aunt living there, they tell her that they are both drafted by accident due to their physical appearances. She hopes that he will stay alive. Koba asked Luther were are they headed, he said "we are going to war with Germany, no matter what happens Koba, we have to stick together to survive this violent conflict" it made Koba very alert and ready to fight for his life. Both arrive at Tannenburg, it became a horror for Koba to see this kind of violence happening in the battle, the first day he is scared of the violent sounds coming from a strong weapon the Germans made, there is also a German troops who happen to be a astral beings fighting for Germany, trying their best to destroy the Russian line of defense. They are too strong to kill, Koba and Luther manage to kill some of them without weapons and the fellow Russian soldier asked if they are a energy being, they nod yes. Germans also have energy beings deploying as a soldier to fight for victory. On the second day, it gets worse, more astral beings from the German army begins to fire a barrage of astral artillery bombs at the Russian lines, causing more lives to die, as the Russian soldiers watch Koba and Luther rushed to the German trenches to fight them, without a single weapon, it shocked them and Russians rush to the trenches as well to begin more killings. Koba and Luther were like a good team for fighting. More German reinforcements arrived it became harder to kill. On the third day it became more intense as the astral beings from the German army begin to swarm and kill the remaining Russian soldiers, it terrified the commander of the Second russian army, lead him to commit suicide. It turns out the this battle will be more bloody than ever, Koba and Luther were the only celestial beings fighting against the vast number of astral beings from Germany. On the fourth day. Koba and the others retreats, as a result of a german victory. Germany lost around 12,000 out of 150,000 soldiers while Russia lost 92,000 out of 93,000. Koba and Luther was one of the few to survive. Some got captured as prisoners of war.
In the following days, Koba begins to have PTSD, crying for his fallen comrades because he had a good time with them. Koba and Luther talked all night about life, how they really want to go home after this bloody conflict. Ellie meanwhile at her home, thinking about Koba all night, worried about him, and hopes for him to stay alive. Koba now is assign to go to Galacia with his brother to fight against the Hungarians, they also have numerous astral beings as their strength to compete against the Russians. Koba prepared his war outfit with weapons for use in order to kill, while fighting, he sensed a stronger astral being with a big energy, as he is on a killing spree on the Russians, Koba managed to only kill 19 Astral beings with his celestial fist, but he and his platoons are ordered to retreat due to a stronger reinforcements. Koba had no choice to follow it. Koba felt humiliated in defeat, exhausted along with Luther, both are hungry trying their best to find food because of short supplies. Both of them kept on training until they are capable for victory for their motherland. This time Koba and Luther are going to east Prussia, it will be the first battle of the Masurian lakes. The Russian offensive in east Prussia start the offensive very well, while Koba in the russian second army invaded the south in hopes in cutting the Germans off the area, Koba waiting for more orders to attack to slow the Germans down. However the Germans with astral beings plan to rapidly move their troops to surround the Russian second army, the first Russian army is in danger of losing more soldiers from the German offensive through astral bomb barrage, leaving thousands to die. Koba and Luther managed to escape from the strong astral beings, but cannot save their allies which Koba to blame himself for not saving them from the deadly massacre. Many months passed to December, Koba overthinking about the wrong decisions in military, so he wanted to lead platoon, Luther is proud of him for determination he had in his mind. Both ready to fight in that day, the battle begins with Koba leading his platoon to bomb the German trenches, Russians are about to retreat, but Koba holds the Russian flag to get back to the front telling everyone to no retreat and surrender. The Russians followed him, it scared the astral beings which lead them to retreat. The day Koba earns his nickname "The Lionheart" from General Paul Von Hindenburg.