20 [Similar Anime] Like In/Spectre

The interactions between characters in both series are similar. Both series have characters have dialogue where the main characters are bluntly honest. Both series have lots and lots of dialogue, and explanations. Kyokou Suiri doesn't have as interesting as fight sequences, but it does have action sequences. It focuses more on the mystery aspect, than action. Both series have very long explanations for their mysteries, but they do make sense in some way.

In/Spectre and Beyond the Boundary are two supernatural anime about a short-haired girl and a boy who both have supernatural abilities—the girl is personally associated with supernatural beings and the boy is seemingly immortal. The two eventually form a relationship due to their supernatural connections.

I must say that both these series have a lot in common, not only from the general "detective" style case solving but a whole lot more from having characters to atmosphere, to even the pacing of episode and story details.

The aura of the to shows are similar. Even if the stories are quite different, but they both have the same slow tempo with a lot of explaining at it's center. They're both mystery shows that keeps pulling you in even though the story telling is slow. The art of Kyokou Suiri is also quite similar to the classic Kyoto animation style of Hyouka.

Both anime are based on manga/novels written by the same author. Because both are from the same author there are a lot of similarities, such as
- both dealing about something supernatural
- similar characters (Aika & Hakaze are together Iwanaga; Kuro being very similar to Yoshino)
- both being detective stories, although Zetsuen has just one big mystery

The main antagonist of In/Spectre is an enigmatic steel beam wielding maniac attacking people at random, inspiring fear and mass hysteria in people who believe she exists. She is similar to the anonymous Lil Slugger from Paranoia agent who attacks people at random with a golden bat. Both series focus on the panic, media coverage, and investigation of the unknown psychos.

Compared to In/Spectre, has a bit less dialogue-based interactions. In bunny girl, it is a bit more with scientific concepts, whereas this is more on hypothetical instancess, deductions, and inferences. There is some good Rom-com with both shows too.

both share the mystery genre and are kinda dark.
you're gonna love them both.

Both shows have an overpowered male lead and a childish looking female lead. Both shows are part of the supernatural and mystery genres.

Charlotte and In/Spectre focus on a duo, a boy with dark hair and a girl with light-colored hair, who actually have supernatural abilities. Both anime even start with the girl finding the boy and asking him for assistance on a task she must do for the sake of others—Nao's job is to stop the misuse of supernatural abilities, and Kotoko's job is to resolve problems between humanity and yokai.

Both are dialogue heavy series, and feature the concept of power being equivalent to viewership approval. Also feature fictional characters that appear in the real world because of viewers.

-girl and boy meet
-both of them can see and interact with ayakashi
-one of them is a god
-have dark pasts

In/Spectre and Uta Kata are two fantasy anime directed by Keiji Gotoh, and despite the latter anime's cover, both shows actually have somewhat similar levels of slow pacing and dark storytelling. The main character in both shows is a girl who has feelings for a boy who is several years older than her. She also has connections to (as well as can see) spirits, which was eventually given to her with a heavy price.

Similar vibes.
Quite similar art-styles.
Both shows are about yokai or the supernatural.
Some amount of gore and dark themes.

The protagonist is a teenager that can see youkaï, spirits and other paranormal beings
Some youkaï see the MC as someone who can help them, some others see the MC as a target or a threat

Both anime are supernatural mysteries aimed at a mature audience (meaning those who are fine with exposition in lieu of constant action.) Both feature strong female leads. Boogiepop is supernatural, but not based on Japanese youkai (as far as I can tell.) FYI the first arc of Boogiepop is a tad confusing (nonlinear storytelling) so be willing to keep going into the second arc even if the first isn't quite your cup of tea.

The same supernatural themed anime where it has two individuals , one guy and one girl whom were in the business of dealing with rogue spirits and other supernatural entities whom were running amuck.

Both anime have a smart loli, accompanied by an older guy, as an MC. Both are mystery/fantasy.

Both animes are similar to the main characters, a couple who are investigating paranormal affairs. There are sympathies between Tilarna and det. Kei Motoba in Cop Craft and Kotoko Iwanaga and Kurou Sakuragawa in In/Spektre, but without showing impassioned feelings, they show this with their amusing dialogues and behavior.

Both shows revolve around solving, or, in Kyoukou Suiri case, providing a plausible explanation, to one central murder mystery set up by a female antagonist. The process involves lots of theorizing and imaginary sequences.