Dawn: Tsumetai Te, Apocalypse no Toride Recommendations
Both series have to deal with infected people, while trying to stay alive. Apocalypse no Toride deals with a more apocalyptic subject (surprise), while Dawn keeps it a secret. Dawn has romance and school, while Apocalypse no Toride has sci-fi. Both series are trying to stop this “disease” and uncover a mystery. Both series have horror and action.
Both have male protagonist, but have a “weak” mind in the start, but grow over time.
Some of the similarities will also come along the way as one have read them both