https://invidious.varishangout.net/watch?v=JZH-M2hdtdM

The trailer recaps the show's first cours (quarter of a year), and it also previews the second cours, as well as the new opening theme song "Rurou no Katashiro" by Masaki Suda x Tokyo Ska Paradise Orchestra and ending theme song "Sonzai Shōmei" ("Existence") by KID PHENOMENON:

https://varishangout.net/media/87f555f7-9f16-47a3-ab91-becf1d2610be/rurouni-kenshin-part-2.webp