The Professor's Quarters (Patreon)

Poor Negi. Kid's a professor but his students not only refuse to be subtle about his diapers but insist he sleep in a crib.

This was based on Negi's habit in the manga to sleepwalk into Asuna's bed to snuggle with her. Guess she got tired of it. But she must've felt bad about it since she gave him a big dinosaur to hug instead. Naturally still has his dinosaur-padding too.