Tanaka-kun is Always Listless

is a web manga series written and illustrated by Nozomi Uda. It's published by Square Enix, with serialization on Gangan Online website and with five volumes released as of November 2015. An anime adaptation by Silver Link aired from April 9 to June 25, 2016.

Plot
For high school student Tanaka, the act of being listless is a way of life. Known for his inattentiveness and ability to fall asleep anywhere, Tanaka prays that each day will be as uneventful as the last, seeking to preserve his lazy lifestyle however he can by avoiding situations that require him to exert himself. Along with his dependable friend Oota who helps him with tasks he is unable to accomplish, the lethargic teenager constantly deals with events that prevent him from experiencing the quiet and peaceful days he longs for.