Season 1
2001 · 51 episodes · 21h 15m in all
A white ermine, known in Japan as an okojo, Okojo-san lives at an exotic pet store run by a greedy manager until one day he escapes. In the chaos following, he ends up unconscious in a garbage can, where college student Haruka Tsuchiya finds him. Mistaking him for a ferret, Tsuchiya takes Okojo home with him. At the Shiawase apartment complex, Okojo meets other pets, including the gerbil Chorori, and the various eccentric human tenants. With his friends, Okojo struggles to adapt to life with humans, vacuum cleaners, and all the other things that come with human society. The comedy is largely reliant on absurdity and Okojo's tendency towards melodrama.

Episodes
- 1
1. Okojo-san has arrived!/Okojo-san goes to the hospital
2 Oct 2001 · 25 min
- 2
2. Okojo-san's Shiawase-sou adventure/Laughing Saeki
9 Oct 2001 · 25 min
- 3
3. Okojo's grave/The enemy is a cleaning machine
16 Oct 2001 · 25 min
- 4
4. Kojopii goes to paradise/Kojopii's campus life
23 Oct 2001 · 25 min
- 5
5. Kojopii's secret/Kojopii vs Tacchin
30 Oct 2001 · 25 min
- 6
6. Tachhin's tears/Kojopii's nightmare
6 Nov 2001 · 25 min
- 7
7. Kojopii's makeover!/Kojopii in love
13 Nov 2001 · 25 min
- 8
8. The fantastic hiking/Cosmos-hata's Tsukahara
20 Nov 2001 · 25 min
- 9
9. Life with Kojopii/There is paradise in Kotatsu
27 Nov 2001 · 25 min
- 10
10. Yuki, Yuuta and Karaage/Leader Okojo! Appearance Chapter
4 Dec 2001 · 25 min
- 11
11. Choruri and Nezumi-dono/I like Kojopii
11 Dec 2001 · 25 min
- 12
12. Battle! Christmas tree/Kojopii's Merry Christmas
18 Dec 2001 · 25 min
- 13
13. Test for Leader Okojo!/Tsuchiya returns home
25 Dec 2001 · 25 min
- 14
14. Chichi's memories/Kojopii, TV debut
8 Jan 2002 · 25 min
- 15
15. Kojopii has been takened away
15 Jan 2003 · 25 min
- 16
16. The mystery of the missing drawing/Choruri's happiness
22 Jan 2003 · 25 min
- 17
17. Choruri VS Watabokori/Leader Kojopii! Battle Chapter
29 Jan 2003 · 25 min
- 18
18. Hari-nezumi is high-class?/Mayumi's love letter battle
5 Feb 2003 · 25 min
- 19
19. Mayumi's love letter battle/Save Itachi household!
12 Feb 2003 · 25 min
- 20
20. Tsukahara, day of dreams/Leader Kojopii! Duty Chapter
19 Feb 2003 · 25 min
- 21
21. Mystery of Ferret/Kojopii becomes a father
26 Feb 2003 · 25 min
- 22
22. Let's grow it! Seed of dreams/Kojopii flies in the sky
5 Mar 2003 · 25 min
- 23
23. Kojopii is trapped/Motemote's condition
12 Mar 2003 · 25 min
- 24
24. Kojopii becomes wild
19 Mar 2003 · 25 min
- 25
25. Leader Kojopii! Counterattack Chapter/Under the cherry blossoms
26 Mar 2003 · 25 min
- 26
26. Okojo VS Okojo/Thy name is Kojuru
2 Apr 2003 · 25 min
- 27
27. Kojuru goes to Shiawase-sou/Leader Okojo! New school term Chapter
9 Apr 2003 · 25 min
- 28
28. Tsubame is being targeted!/Kojuru's favourite thing?
16 Apr 2003 · 25 min
- 29
29. Ojuko and Granny/Leader Okojo! Hospitalised Chapter
23 Apr 2003 · 25 min
- 30
30. Death match! Carp's streamer/I want to meet my idol!
30 Apr 2003 · 25 min
- 31
31. Kagaku-kun's terrifying experiment/Leader Okojo! Teaching Chapter
7 May 2003 · 25 min
- 32
32. Being a mangaka is tiring/Hide-and-seek competition
14 May 2003 · 25 min
- 33
33. Miyu is a great trimmer?/Leader Okojo! Prosperity Chapter
21 May 2003 · 25 min
- 34
34. The lost wild nature/Yearning of humans
28 May 2003 · 25 min
- 35
35. I cannot say "Thank you"/Leader Okojo! Home visit Chapter
4 Jun 2003 · 25 min
- 36
36. Kagaku-kun's second challenge/Okojo VS Mecha-Okojo
11 Jun 2003 · 25 min
- 37
37. Kojuru and Choruri/Leader Okojo! Purchasing department Chapter
18 Jun 2003 · 25 min
- 38
38. Mayumi's date battle/Tsukahara's Okojo cut
25 Jun 2003 · 25 min
- 39
39. A wish upon a star/Leader Okojo! Pool Chapter
2 Jul 2003 · 25 min
- 40
40. Kojopii's return of kindness/Mayumi's pair-look battle
9 Jul 2003 · 25 min
- 41
41. Leader Okojo! Seaside School Chapter/Part-time Panic
16 Jul 2003 · 25 min
- 42
42. Poolside crisis!/Tsuchiya dances in delusion
23 Jul 2003 · 25 min
- 43
43. Colorful Kojopii/Leader Okojo! Guide to life Chapter
30 Jul 2003 · 25 min
- 44
44. Tacchin, a start in love/Kojoru, why are you white?
6 Aug 2003 · 25 min
- 45
45. I am Kojopii?/Hasegawa, afternoon times
13 Aug 2003 · 25 min
- 46
46. Tacchin's love and hatred/Heart-throbbing panic
20 Aug 2003 · 25 min
- 47
47. Yearning for Okojo/Leader Okojo! Summer holiday Chapter
27 Aug 2003 · 25 min
- 48
48. Choruri's marriage/Mecha-Okojo's counterattack
3 Sept 2003 · 25 min
- 49
49. I like you! Tsuchiya/Leader Okojo! Sports meet Chapter
10 Sept 2003 · 25 min
- 50
50. Warm Kojoru/Leader Okojo! Finale Chapter
17 Sept 2003 · 25 min
- 51
51. Shiawase-sou's Okojo-san
24 Sept 2003 · 25 min
Shiawase Apartment's Okojo-san Season 1: quick answers
How many episodes are in Shiawase Apartment's Okojo-san Season 1?
Season 1 of Shiawase Apartment's Okojo-san has 51 episodes, about 21 hours in total.
When did Shiawase Apartment's Okojo-san Season 1 come out?
Season 1 premiered on 2 Oct 2001.