- Anime First
- All-Star Cast: the Japanese version consists of Yuichi Nakamura, Mamoru Miyano, Shino Shimoji, Yuichiro Umehara, Tomokazu Sugita, Hiro Shimono, Shizuka Ishigami, Inori Minase, Ari Ozawa, Takahiro Sakurai, and Akio Ohtsuka.
- Played With in the English dub. while the majority of the cast consists of well-known talents like Josh Grelle, Sarah Wiedenheft, Scott Gibbs, Christina Kelly, Kyle Jones, Amber Lee Connors, Allison Keith, Shelley Calene-Black and Ian Sinclair with the voice direction of David Wald, it also consists of newer talent like Howard Wang, Alejandro Saab, Savanna Menzel, Avery Smithart, Shanae'a Moore, Maike Haimoto, and David Harbold.
- The Other Darrin: Due to Yuichiro Umehara's sudden hospitalization due to acute disseminated encephalomyelitis, Tomokazu Sugita takes over for the last 3 episodes.
- Production Posse: Anime Studio Doga Kobo, Director Mitsue Yamazaki, Writer Yoshiko Nakamura, Composer Yukari Hashimoto, and voice actors Yuichi Nakamura, Ari Ozawa and Scott Gibbs had previously worked together in Monthly Girls' Nozaki-kun.
- Relationship Voice Actor:
- in the Japanese version:
- Mitsuyoshi just wanted to embrace Kaoru's Gundam and wants to show his love.
- Mitsuyoshi has become a massive Troll and a Jerkass God and it's up to episode 11-13!Hajime to stop him. They also happen to be best friends in real life.
- Mitsuyoshi and Hajime are Dwarf Shaman, Lizard Priest, and Goblin Slayer.
- Mitsuyoshi and Nyanko Big have previously worked together in Monthly Girls' Nozaki-kun as Umetaro Nozaki and Chiyo Sakura.
- Mitsuyoshi, Charles, episode 11-13!Hajime, and Nyanko's voice of his heart are Bruno, Rohan, young Joseph, and Wamuu.
- Mitsuyoshi and Yui are Reinhard and Rem.
- Mitsuyoshi, Charles, and Theresa (Manaka Iwami) are the 2019 versions of Shigure Sohma, Ayame Sohma, and Tohru Honda.
- in the English Version:
- Mitsuyoshi, Teresa, young Kaoru and Charles are Tokoyami, Tsunotori, Emi and Shoji, Issei, Kunou, Jeanne and Shalba, and Grand Minister, Zeno, Dercori and Whis.
- Mitsuyoshi, Charles, and Kentaro (Howard Wang) have swim together, living together in a prison, human personification of swords and Ice Skate together.
- Teresa, young Kaoru, and Cherry were once ship girls.
- in an Isekai World, Mitsuyoshi had a powerful cellphone and one of his haremmates is Teresa.
- Teresa and Charles were part of the Black Bulls, the Voice Director happens to be a member of the Eye of Midnight Sun and Mitsuyoshi is the captain of Golden Dawn.
- Alec (Avery Smithart) and Hinako (Shanae'a Moore) were part of the Team White Pigeon.
- Teresa, Alec (Avery Smithart) and Hinako (Shanae'a Moore) are Phosphophyllite, Cinnabar, and Obsidian.
- in the Japanese version:
Trivia / Tada Kun Wa Koi Wo Shinai