Am i disappointed by the rushed end? Yes.
Am i disappointed by the end result? No. Everybody got the ending they fucking deserved.
Given the rush we couldn't see Yuri, Yuuko, Nagi and Reiji's 2023 selves on screen (Reiji was seen waving at Chako tho), but at least i'm happy the last 2 chose to start over andnpursue their happy end together and have a quiet life working for Shino'oka. Yuri was implied she murked Mao Yuuko chose to live fueled by pure and sheer hatred against Reiji for... not having been a girl she could manipulate and traumadump her generational bullshit. She was jailed tho.
Chako got a mass glowup, her 37yo self looks hot af. Still sad she won't get over her unresolved feelings for Esemori, but at least she'll be there for Gen's new life.
As most of us guessed, Esemori's unfinished novel was basically this manga.
Gotta thank BCS/Abyss When and the guys from the subreddit for having carried the translation for these 4 years. Final volume will have important additions, so i guess the revision won't feel disappointing.
PD: i realized the timeskip wasn't of 20 years, but of 2 years. My bad. That makes the DenjiReiji and MakimaNagi art Ryou posted as a goodbye on her X make more sense.