Haven't You Heard I'm Sakamoto Season 2: Will We Ever Get A Sequel

Similar to most anime adaptations, Haven't You Heard? I'm Sakamoto relies heavily on its’ source material, which is the manga. Unfortunately, Studio Deen might not have enough source material for them to make Haven't You Heard I'm Sakamoto Season 2. The first season already used up all of the 4 manga volumes, therefore it seems unlikely that the studio will be able to renew the anime. 
Similar to most anime adaptations, Haven't You Heard? I'm Sakamoto relies heavily on its’ source material, which is the manga. Unfortunately, Studio Deen might not have enough source material for them to make Haven't You Heard I'm Sakamoto Season 2. The first season already used up all of the 4 manga volumes, therefore it seems unlikely that the studio will be able to renew the anime. 

Sakamoto desu ga? (Haven't You Heard? I'm Sakamoto)

Attack on Titan, Final Season Review

Sakamoto Desu ga Season 2: Release Date, Plot, Characters

2022 Anime Year in Review: The Top 10 (and Anime of the Year Video

Haven't You Heard I'm Sakamoto Wallpaper by coolkat122 on DeviantArt

Hiroyuki Seshita - News - IMDb

Classroom of the Elite II, Where Merit is Paramount

Haven't You Heard? I'm Sakamoto Vol. 2 by Sano, Nami

Sakamoto desu ga?: Sakamoto Deshita? (Haven't You Heard? I'm

Upcoming (Future) Anime, Seasonal Chart

Rurouni Kenshin Set the Bar for International Anime Success – OTAQUEST