Tohru and the Thing is the thirty-seventh chapter of Kobayashi-san Chi no Maid Dragon.
Summary[]
After being transformed into a man, Kobayashi must avoid Tohru before she finds out about her new "thing".
Plot[]
After discovering that Ilulu cast a sex change spell on "him", Kobayashi comes home terrified, only to find Tohru after getting out of the shower, causing him a strange reaction to see her, because due to the change, now Kobayashi is being dominated by his lust.
As an attempt to forget all the past, Kobayashi believes that it is best to ignore Tohru, but it is impossible, likewise even when Kanna is close to Kobayashi, he feels "the heat" dominating him. Kobayashi comes to the conclusion that being magic, the spell should not last long and therefore, he can return to normal at any time, since Ilulu was clearly weak from her previous fight with Tohru.
However, Tohru ends up discovering Kobayashi's secret and as punishment for hiding it, she asks him to at least do a little bit of lewd things, but this does not happen, because "the thing" gets smaller when he sees how Tohru took off her Maid's clothes , explained as "The lack of passion when watching a cosplay take off her clothes." Finally after a few days later, Kobayashi returns to be a woman again, passing Ilulu's test.