This sub-article lists unofficial content associated to characters and other stuff that originally appeared in the third Len'en Project game Reactivate Majestical Imperial.
- The peculiar shape and orientation of their spine-like bone in Brilliant Pagoda or Haze Castle, associated with one of their spell cards has caused fans to refer to the former as a bone bazooka. This notion has been more or less confirmed by their playable character portrait showing light emitting from within the bone.
- Sese's max power shottype in Brilliant Pagoda or Haze Castle used on bosses has led fans to call them "broken" or "overpowered", and to call Brilliant Pagoda or Haze Castle a "shotgun game". The phrase "Sese is a fair and balanced character" is also used sarcastically to indicate this.
- Their species, gashadokuro, has led to bone-related jokes.
- Sese is often compared to Sans from Undertale due to both being skeletons. Both dwell on the "underground" and are able to use powerful "bone blasters".
Anigif of Tsugumi
- Tsugumi appears to be a homage to Johnny Joestar due to similar personalities as well as clothing design. This has led some fans to believe that they are actually crippled like him, thus needing various vehicles for transportation. In their 2017 interview, JynX claimed the resemblance was unintentional.
- Tsugumi's sprite animation in Brilliant Pagoda or Haze Castle has became a meme in the fandom, because they are shown spinning and moving in an unusual way during their boss fight. This has led to jokes of them being the Hina Kagiyama of Len'en.
- Since their ability is to ride on anything at all, there's a meme that puts Tsugumi riding not just objects, but also people. One unusual scenario is them riding Taira no Fumikado.
- Some fans compare Iyozane to Fujiwara no Mokou , due to them being from the same clan.
- Their gluttonous nature has caused a meme to spread around the fandom, which consists of typing "CCCCOOOOONNNSSSUUMMMEEEE" in online forums.
- Shion's face in their boss portrait in Brilliant Pagoda or Haze Castle makes them look more mature than they really are, particularly with the pose and the rather pronounced hips, leading fans to call it "[n]ow they come back for fashion show". Furthermore, their face in the portrait is often superimposed on images of other Len'en characters, games, and even UI elements due to its characteristic look.
- Tenkai's theme "Present World Overhaul" is a common meme in the Western fandom due to it being very upbeat for an extra boss theme, placing it in climactic situations. JynX eventually made contribution to the meme on Rei's Twitter which is also a reference to "Trumpet Boy" meme.
- Due to them being nicknamed "Melon" in Brilliant Pagoda or Haze Castle by the characters in the Haze route and Sese and Sukune has led to it being used in the fandom.