Akina Takemaru was originally a general who served Princess Sixteen Nights, the wife of the Fighting Tooth King.

The enemy who appears in Inuyasha is the general who guards the princess of Sixteen Nights, and he deeply admires Sixteen Nights, but it is a pity that the person whom Sixteen Nights loves has always been the father of the most powerful youkai Inuyasha, King Douya, and later because he learned that she was pregnant with a child of a youkai, he stabbed Sixteen Nights to death on the night of the full moon when he was about to give birth because of love and hatred.

On the occasion of his death, Sixteen Nights gave birth to Inuyasha.

Akimaru went to the outskirts of the mansion to stop King Douya from rushing to the mansion to save the mother and son of Sixteen Nights, but his left arm was cut off by the angry King Douya, and then ordered the house to be set on fire. After the Fighting Tooth King used his natural teeth to revive Sixteen Nights, he gave the Fire Rat Qiu to Sixteen Nights' mother and son, and named the child "Inuyasha".

However, Tsukasamaru said, "If I go to the Yellow Spring together, I have no resentment", so the Dou Tooth King, who was already seriously injured, used the Cloud Tooth Prison Dragon Break to fight with Šena Yamaku, and then the two were buried together in the fire.

Awakened by Cong Yunya. From Yunya, he takes advantage of Zena Takemaru's longing feelings for Sixteen Nights, and bewitches Zena Takesimaru to hate Sixteen Nights' abandonment of him, as well as the Fighting Tooth King who died with him, and includes Inuyasha and Sesshomaru. Later, he used the severed left hand of Sesshomaru as his body, became the host of the cloud fangs, killed the human city lord to occupy the territory, and led the messenger of the underworld to the present world.

After consuming the energy of Sesshomaru and Inuyasha, they will take the bell who picked up the natural tooth and Kagome who came to save her away, and Sesshomaru and Inuyasha rush to the main city at the same time to rescue the people they cherish, and Cong Yunya instigates Instant Fierce Pill, "The women who are with youkai are all abominable sixteen nights!" When he wanted to kill the bell who was protecting Kagome, Sesshomaru arrived immediately and blocked the attack.

However, the moment Makumaru saw Inuyasha, the shadow of his deep love for Princess Sixteen Nights crossed his mind, so he sneered at Inuyasha and said that his eyes reminded him of the ridiculously betrayed woman Sixteen Nights, and he was the man who personally sent his mother and father to Yellow Springs. (Although Inuyasha's father later revived Sixteen Nights with his natural teeth) Inuyasha was angry and became entangled with Akinayama.

In the end, Inuyasha fought back with his iron fangs, and the powerful force was able to confront the clouds, and Inuyasha said that he was grateful to his parents, because it was his parents who gave him the idea and hope of different youkai. Accompanied by Inuyasha's words, Takemaru was stunned for a moment, he looked into Inuyasha's eyes, as if he saw the person he had loved and unforgettable again, Princess Sixteen Nights, and suddenly remembered the scene when Sixteen Nights persuaded them to retreat, her tired words and gentle eyes, so he suddenly remembered that she was actually protecting him, (because he couldn't resist the powerful Inuyama General), and realized that he had never hated the Sixteen Nights Princess he loved deeply, and still missed her deeply, tired and unforgettable, so in the end the obsession dissipated and turned into white bones.

Akira Matsumaru is actually deeply in love with Sixteen Nights, but he can't bear the fact that he loves her deeply but marries a wife, thinking that Sixteen Nights has changed his mind. Thinking betrayed, deceived, and abandoned, he was finally blinded by hatred - killing Sixteen Nights. He died with a grudge, so that his soul could not be liberated. Until the arrival of Cong Yunya.

In an instant, the resentment in his heart was amplified by Cong Yunya, and he connected to Sesshomaru's left arm that was cut off by Inuyasha, and was able to use the Hell Dragon Break, which destroyed mountains and rivers, to summon the dead in the underworld to be driven by himself.

Strength suddenly became a top-notch existence.

But this power is not so much that of Akira Daimaru as it is more precisely that of Cong Yunya, and that Akatamaru is here only as a sword-wielding puppet, providing a crucible of negative emotions of resentment.

And in an instant, Matsumaru holds the cloud fangs in his hand, and has the strength that should have been defeated only by Sesshomaru and Inuyasha with innate teeth and iron crushed teeth.

As a result, he was suppressed by Inuyasha with a strong protective heart, holding iron and broken teeth, and finally broke off the resentment in his heart and died suddenly.

Akira fell in love with the princess of the sixteen nights, and if it weren't for the dog general, he might never have wanted to really get the princess.

But he will never allow the perfect and holy princess in his heart to fall in love with a monster and give birth to an heir for the monster.

Therefore, he chose to kill the princess along with her children when she was about to give birth.

Such feelings and actions seem to be not difficult to understand, but they are really too cruel, and they cannot be agreed.

Akira thinks that youkai are bad, and falling in love with youkai in Sixteen Nights is betrayal.

For this reason, he desperately wanted to kill the dog general.

Such resentment made him not reincarnate for two hundred years after his death. In the end, he was awakened and used by Cong Yunya, distorting his emotions and making him resent Sixteen Nights.

However, Akimaru finally saw Sixteen Nights again from Inuyasha's body, and remembered that Sixteen Nights had asked him to withdraw with his soldiers to protect himself......

I remembered that Sixteen Nights had never betrayed, and I was not resentful of Sixteen Nights, but deeply missed and loved.