The Harujion (ハルジオン) is a flower from the Outside World that rarely blooms in Mugenri. It's known for being a dangerous item that absorbs vital energy in order to grow up.
The few times the Harujion appears in Mugenri, only one flower blooms and it needs to absorb the vital energy from all living beings around it to be able to grow up. The flower can be used from creating drugs to resurrect the fallen ones or to reach the immortality. To avoid this, someone from the Senri Shrine goes there and lumber its sprout down.
The name "Harujion" is the Japanese name for Philadelphia fleabane. It is simply a very large purple daisy flower that seemingly grows when it absorbs spirits. It appears to be based on the Saigyou Ayakashi , as both are a type of youkai plant that can absorb a kind or energy that's dangerous for humans. They both also appear in the spell card background of a final boss and were referenced in their official profile. With this, Shion also seems to be based on Yuyuko Saigyouji .
The Harujion was originally a typical purple daisy flower that was dangerous for Mugenri. After absorbing the souls from Fumikado's ritual, the Harujion became corrupted and its form resembled a black silhuette. It's described as a "flower that looks like a child's ink scribble on a white canvas".
- Reactivate Majestical Imperial
During the events of Reactivate Majestical Imperial, the heroes were not told about the Harujion, so it blooms once again without anyone to stop it. The place where the Harujion sprout this time after absorbing mounts of vital power was the same place where Taira no Fumikado was planning to do their resurrection ceremony. Without Fumikado's knowledge, a great amount of souls which they were collecting were absorbed by the flower. Then a great number of death and alive beings from there were mixed generating a single personality. Even being a spirit, since it owned much more vital energy than an usual creature, it had also a physical body, thus Shion was born. The newborn youkai was challenged to a danmaku battle by the heroes and is defeated. In the end, Shion is officially adopted by Yabusame and Tsubakura.
- Brilliant Pagoda or Haze Castle
The Harujion still remains in the Withered Grove as of Brilliant Pagoda or Haze Castle, and appears in the background again if stage 6:1 is visited. According to JynX, it is withering as a result of Shion drawing power from it, and has been left standing because it's unlikely a second Harujion will bloom.
- Shion (Avatar)