S1·E28 The May Blues

Katsuta Rui, a young company man who still lives with his mother, has lost interest in his job because of his demanding boss named Oniyama. Moguro suggests that he practice knitting during lunch breaks and discovers that Oniyama also knits which makes his life easier, but Oniyama warns him to keep it a secret. However, Katsuta's mother finds out and exposes Oniyama who has to resign and he begins teaching knitting assisted by Katsuta, much to his mother's horror.