Does Summertime Rendering anime have a happy ending?

The anime adaptation of Yasuki Tanaka's Summertime Rendering has received critical acclaim from fans of the manga all over the world.

Summer Time Rendering - Wikipedia

Haine, Summer Time Rendering Wiki

Summer Time Rendering Is Latest Jump Plus Manga to Get Anime After Ending – OTAQUEST

Summertime Render - 25 (End) and Series Review - Lost in Anime

Disney+ and the Summertime Rendering Problem, by DoctorKev, AniTAY-Official

UDON To Publish ' Summertime Rendering' As Six Omnibus Editions In The West - Noisy Pixel

Can somebody explain the ending of Summertime Render to me? Why did Shinpei time travel one last time to a world where everything was okay, nobody was dead, and it seems like

Summer Time Render

Summertime Render - 25 (End) and Series Review - Lost in Anime

The Summertime Rendering Manga Comes at a Good Time - Siliconera

Summertime Render – RABUJOI – An Anime Blog

Summer Time Rendering Anime's 2nd Half Unveils New Video, Cast Member - News - Anime News Network

Shinpei Ajiro, Summer Time Rendering Wiki

First Impression: Summer Time Rendering – Beneath the Tangles