This review may contain spoilers:

"Summertime Rendering" is a unique anime that explores time looping in a fresh and intriguing way. Unlike other anime where the main character loops to save one person, this show has the MC looping to save everyone. The anime wastes no time in introducing the looping concept, and it's fascinating to see how quickly the shadows figure out his ability. The explanation behind the time looping is pretty clear, and the drawback of looping with the event horizon coming close adds tension to the show.

One of the most interesting aspects of "Summertime Rendering" is the addition of the antagonist also looping, which keeps things interesting and unpredictable. This is exemplified when Hizuru dies despite killing Shide in the previous loop. The anime also delves into the psychological aspect of whether there is any difference between someone and their perfect copy, adding another layer of depth to the show.

The final scene of the final episode was truly touching and beautifully executed. After all the trials and tribulations the characters went through, I was concerned that their experiences would be forgotten, rendering their efforts pointless. However, the scene portrayed the characters with a semblance of their memories of the loops and the events that took place. This added a sense of closure to the story, leaving the audience with a bittersweet feeling of hope and nostalgia. It was a lovely and heartwarming conclusion to a unique and intriguing anime.

However, there are some issues with the show that need to be addressed. Firstly, it's unclear why the MC started at the 22nd July (boob scene :P) the very first time he went back, especially since his respawn time should have been way back since he never did this before and the event horizon moves considerably slower. Additionally, Haine's desire to leave to her planet with her family is confusing as it's not clear who her family is. Leaving Nezu alone in episode 14 is also puzzling, either a dumb strategy or a very big oversight.

Furthermore, there are several unanswered questions in the show. These include how Shinpei received the eye and what sort of monster Gill (and others like him) is. Additionally, it's unclear how her brother's shadow possessed Hizuru, especially since shadows were never shown to be able to do such things anywhere else. Finally, the scene where Haine erased all of the oxygen from the hall in episode 15 was not clear since shadows should only be able to copy stuff.

Overall, "Summertime Rendering" is a unique and intriguing anime that explores the concept of time looping in a fresh and innovative way. While it has its flaws and unanswered questions, the show is worth watching for its fascinating storyline, well-developed characters, and psychological depth. It's definitely a show that will keep you guessing until the end, and the final scene is a satisfying conclusion that ties everything together. Despite its flaws, "Summertime Rendering" is definitely worth a watch for fans of the time looping genre or those looking for something different and thought-provoking.