Kindle and Nook!
Update: eManga version now available!
Kanda is a normal grad student working on his Master’s degree. At the
start of the new school year, his ceiling collapses and dozens
of computers, two cats, and a strange man suddenly drop into his
apartment. Even more startling, this quirky, childish, and disorganized
man is Nazuna-sensei, a teacher at his school! Their unique situation
forces the two of them to live together until the ceiling can be
repaired. Kanda is annoyed that he’s forced to live with a stranger…but
can’t quite bring himself to hate it. Nazuna Sensei & Kanda Kun
follows a teacher who only notices computers and cats, and a student
who's noticing him.
This is light and fluffy fare, similar to COTMS, and great for introducing someone to BL. And the cats are a riot. Seriously. :)