I have mixed feelings about this anime. (Spoilers ahead!)

The plot revolves around high school students Jogorou Kobatou and Yuuki Osanai who for reasons from their middle school years, now wish to have a "normal" high school life. However things don’t go as they planed. Kobatou repeatedly gets involved in mysterious situations where he has to use his deduction skills even though he no longer wants to. The mystery aspect is well executed in my opinion. Watching Kobatou solve the puzzles was engaging and the conclusions were logical and easy to follow. As the story progresses, the situations escalate from petty theft to an abduction which was both surprising and entertaining.

But there is major problem here. As good as the mystery aspect is parts of it were irrelevant to the main story and this is confusing for me.

Instead the anime alternates between "slice of life puzzles" and the larger overarching plot. For instance the second episode is about how Kobatou's friend Kengo made hot chocolate and only left behind a dirty spoon. While it was interesting to figure out how he did it, it had nothing to do with the bigger plot introduced in the previous episode where Osanai's bike was stolen and then found at a burglary crime scene. Instead of follwoing this mystery the focus shifts to hot chocolate… This back and forth between the main plot and slice of life moments happens far too often and it helds the main story back in my opinion. Maybe the story would have benefit by connecting both parts better..
Additionally some story elements are not well presented. For example in the second half when Kengo is surveilling a gang and explains the situation to Kobatou, it’s difficult to follow who is who as it’s mostly communicated through heavy dialogue.

However I found the second half still well done. The main plottwist regarding Osanai's true character was brilliantly build up and definitely makes me curious for the already announced second season. The fact that the ending is not a happy one fits quite well, as Kobatou and Osanai’s relationship never felt entirely natural. They seemed to be bound only by their promise and their connection felt superficial even though Kobatou was concern for Osanai during the second arc.

In addition I like Kobatou and Osanai as Characters. Altough their Relationship seems not deep they could make out a good couple, like everyone thought they are lol. There aren't many relevant side characters, infact it’s just Kengo, so you don’t see them interact with other people much but this problem could be tackled in season 2 at least.

Additionally I liked the calm atmosphere and storytelling as well as the fantastic opening theme.
All in all the anime presents good mystery elements but suffers from its confusing structure and inconsistent story elements.