Is Miss Monochrome The Animation 2 hentai?
No
Rated G (All Ages) on MyAnimeList and not tagged as Hentai.

TV · 2015 · 13 episodes · G - All Ages
Comedy, Idols (Female), Music
The Ultra Super Pictures Special Stage event announced at AnimeJapan 2015 on Saturday that the Miss Monochrome television anime series will receive a second season. The season will run within the 30-minute Ultra Super Anime Time block beginning on July 3, 2015. (Source: ANN)
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