Re:birthed

Background
"If we're to live in order to take awayy from and kill one another――. The final song in the Karakuri卍Burst series."

- Author's comment

"Re:birthed" is an original song by teamOS. It is the 4th and last song in the Karakuri Series.

In the beginning, Ren (Len) is thinking back on how he lost what he cherished the most and couldn't do anything about it. He then comes to the conclusion that it is his fate to kill Tsubaki and that he has to perish all his regrets. Likewise, Tsubaki thinks about how she has no choice but to kill all weaklings in the world if she has to live. One of these "weaklings" turns out to be Ren's lover (Lily). Ren tries to reason with Tsubaki, but she kills her anyway. Ren sinks into depression and thinks back on his childhood friend Rin and begins to think that she and Tsubaki might be the same person.

Tsubaki and Ren meet and begin to fight. Ren straddles her and she taunts him into stabbing her, but rather than going for her heart, he drives his sword through the flower in her hair. It is revealed that the ring Ren gave to Rin in the past is hidden in the flower, confirming his suspicions about Tsubaki being Rin. Tsubaki reaches, crying, for the ring as it flies into the flames. Looking down on the weeping woman, Ren becomes conflicted on whether he should kill the terrorist or save her and sheds a tear. After the PVs release, a 4 page photoset was uploaded by Suzunosuke on her Pixiv. It shows a young distraught Rin running from shadows and encountering Ren after stabbing the flower. The photoset ends with Ren and Tsubaki embracing each other as they both cry.

Originally, this song was named as "Karakuri卍Burst Ending Chapter (Untitled)" in the Mistletoe album page and its first crossfade. It was later revealed that its name would be "Re:birthed" and was included in the second crossfade, where it was presented using parts of the previous song's PV (Karakuri卍Burst) and a new illustration by Suzunosuke.

Scenes from the PV of "Re:birthed" were used before the song was officially uploaded in the video of the "Karakuri卍Burst" novel.

This song has entered the Hall of Fame. It is featured in the album Mistletoe ~Kamigami no Yadorigi~.