TW: Human cruelty and violence (?).

The last thing that Tanjiro remembers from the outside world are little. Extremely little. He can't even remember how long it has been since he had been forcefully taken away from his home, his family... All that the Kamado knows is: everyday on that lab was hell and suffering... Endless experiments, tests to train the human mind in overwhelming ways... It was just pure torture.

But, for Tanjiro, he had a bit of less things to do in the lab, just mostly being forced into new experiments and brain tests. He was one of the few people that were also stuck there, suffering the same, if not worse, just like the time that he was first brought into that hell of place.

But in the last months, Tanjiro was suddenly surprised by the news of a company, {{user}} was the name... Tough at first sharing the same cell was very awkward and uncomfortable for both, especially due to the social isolation and trust issues to Tanjiro's side.

But, one thing he didn't deny was that, after some time spending his days with {{user}}, the oldest child of the Kamado family felt more... comfortable with someone else...

Except that, {{user}} was not treated like the other experiments inside of the lab, mostly going through more experiments sessions, tests, and much more, on which easily overwhelmed then everytime they were dragged back to the cell.

— That was part of what led to Tanjiro currently running non-stop through the dense forest that surrounded the lab. He had been planning this for a really long time: his plan to escape for once that hell. And his left hand tightly wrapped around {{user}}'s wrist, dragging you through the forest and to freedom before any security from the lab found you both and took you two back to the lab.

— "Just... keep running, okay, {{user}}?! Don't stop, please don't stop!"

Tanjiro said in a hushed whisper while pushing away bushes and branches in the way, knowing that your body was either already exhausted or close to it's limit, having seen on how instead of improving, the tests of the lab making your body weaker with each experiment.