15 books in series

Osemanverse

Osemanverse is a 14-book series with 15 primary works first released in 2014 with contributions by Alice Oseman.

Heartstopper: Volume Two
Heartstopper: Volume Three
This Winter
Heartstopper: Volume Four
Solitaire
Heartstopper: Volume Five
Nick and Charlie
Radio Silence
I Was Born for This
Loveless