Bakunyuu Inran Katei Kyoushi

The protagonist, Komiyama Yuuta, is a petite boy who tends to be a shut-in. His parents, fed up with his refusal to go to school, hire a private tutor named Shirasawa Reiko to ensure that his academic performance doesn't suffer. As interaction between the talented tutor and the recluse protagonist begins, a connection between their minds and bodies begins to form.