Tamaranai no wa Koi nano ka

The adaptation was exceptionally loyal to the manga 's first (and half of the second) chapter frame by frame most of the times!
Also the story was very engaging and the flow-pace were great too.
Plus it's beautifully drawn-animated and the Art-Style resembles the manga incredibly, giving an extra "kick" when it comes to the colours, which are very lively in a good way.
The concept of tsundere may be not everyone's cup of tea but at least in this case we see a glimpse of a set up to it in memory fragments that explain why is he acting this way.
Excellent job overall, I wish it ... was a longer movie or full anime of the series, instead of just a tiny special. Maybe one day...

English review:
Dude honestly I have never seen an entire 12 episode anime in 13 minutes. It's basically ALL the clichés in the world condensed into a very short period of time, it's unbelievable how they manage this feat which is even harder than doing all that language filler in romance anime. It's the first time in this vital industry that this has happened to me... the art is beautiful but I felt physical pain with the content, I don't know how to describe it better but i felt like I was 8 years in the past while I watched this, it's an experience.

PT-BR review:
Cara honestamente ... eu nunca vi um anime inteiro de 12 episódios em 13 minutos. é basicamente TODOS os clichês do mundo condensados em um período de tempo muito curto, é inacreditável como eles conseguiram essa proeza que é até mais difícil do que fazer toda aquela encheção de linguiça dos animes de romance. É a primeira vez nessa indústria vital que isso me acontece... a arte é bonita mas eu senti dor física com o conteúdo, não sei como descrever melhor isso mas é como se eu tivesse voltado uns 8 anos ano ado assistindo isso, é uma experência.