#04 Challenge - 20/20
Starting Date : Jan 31, 2019
Ending Date : Nov 14, 2019
- [O] Watch an anime that aired on the 4th day: Outbreak Company
- [O] Watch a series that aired in the 4th month: Seikoku no Dragonar
- [O] Watch a series that aired in a year ending in 4: Mangaka-san to Assistant-san to The Animation
- [O] Watch a series with 4 in the title: Dragon Ball Movie 4: Saikyou e no Michi
- [O] Watch a series with 4 in an alternative title: Pokemon Movie 04: Celebi Toki wo Koeta Deai
- [O] Watch a series with a main character that has 4 in their name: Gokukoku no Brynhildr | [Hatsuna Wakabayashi]
- [O] Watch a series with 4 characters listed: Cyclops Shoujo Saipuu
- [O] Watch a series ranked with 4 in it: Sakura Trick
- [O] Watch a series with a popularity that has 4 in it: Hayate no Gotoku!
- [O] Watch a series favorited 400 to 499 times: Sabage-bu!
- [O] Watch a series with total members between 40,000 and 49,999: Toaru Majutsu no Index-tan
- [O] Watch a series with 4 episodes: Armitage III
- [O] Watch a series with 24 min. per ep.: Servant x Service
- [O] Watch a series with only 4 recommendations: Taiyou no Ouji: Horus no Daibouken
- [O] Watch a series with 4 forum discussions: Heisei Tanuki Gassen Ponpoko [X] Watch a series with the most number of votes in 4: [X] Watch a series with the least number of votes in 4:
- [O] Watch a series that was reviewed on day 4: Slam Dunk | REVIEW
- [O] Watch an anime tagged as Comedy, Cars, Josei, or Shoujo Ai: Hamatora The Animation
- [O] Watch an anime from J.C. Staff or Production Reed: Witch Craft Works
- [O] Watch an anime that aired on the 14th day: Devil May Cry
- [O] Watch a series with a rating that has 4 in it: Ocha-ken: Chokotto Monogatari