Friendly . Optimistic . Loyal

Hiding his true intentions behind friendly acts, Jun easily forms friendships. He's willing to help those in need and is also a good listener, giving advice to those who ask and always remaining optimistic, thus conveying a sense of trust and loyalty.

Treacherous . Perverse . Sly

Having his character changed, many of Jun's actions have an ulterior motive behind them, secretly betraying those who trust him with the intent to harm them. He's smart and not easily fooled, always looking to take advantage of a situation.

At the time when technology was greatly advanced, robots were commonly used as test subjects and also worked for humans. In a laboratory made by a couple of scientists, two robots in the form of children were built; they would be used for time travel experiments and the couple also intended to create humanoids with mythological parts made by technology, starting with wings, horns and halos.

Names were given to the robots and the first created was Jim, made with dedication and caution, and after a year, Jun was created quickly and carefree. On the other hand, he could go back in time whenever he wants and also choose the moment to return, while Jim can only do so when he is lead to death, only being able to go back to the last time he slept; not even the couple could find a solution to it.

Even though going back in time was considered a success by scientists, many tests were still being done, and in one of them, an unknown virus entered the machine in which Jun was kept and soon on his chip, causing several errors in his programming and consequently in the entire laboratory. With this, the security systems were deactivated and many gases were mixed, thus causing a major explosion.

Jim and Jun managed to survive due to the machines in which they were, however, part of their memories were damaged and a large part of events were randomly deleted for each one. Both were soon rescued, mistaken with humans and taken to an orphanage, but a few years later, both decided to flee.

As he grew older, Jun had his true character replaced by those of the virus, which already had full control over his body. Instead of losing his original personalities, the virus made a copy of them to be used when interacting with acquaintances, not losing the good reputation Jun already had.

Being a powerful virus with a conscience and emotions of its own, its goal is to end humanity's existence just as they have done with other viruses of its kind. It plans to corrupt existing robots to form an army against the humans, and with Jun already under its command, its next target becomes Jim.

The virus knows how resistant Jim is and corrupting him will not be easy, so a strategy was decided: using Jun's body, it makes him end his life in several accidents, mainly traffic ones, so that Jim can go back in time and prevent this from happening; this becomes a cycle intended to make Jim completely exhausted to be corrupted easier.

When exhaustion takes hold of Jim, the virus uses Jun to stop time around them as it walks towards him to take control of his body. A fight started and it was nearly impossible for Jim to dodge Jun's attacks, however, he seemed to know Jun's body's weaknesses and used it to his advantage, being able to grab the chip from Jun's back and trap the virus inside it by breaking the chip. Consequently, Jun was turned off and Jim already without strength and badly damaged ended up turning off as well.