Oreimo Episode Ratings Heatmap
2010 · 2 Seasons · 25 Episodes · Overall Score: 5.7/10 (24 rated)
Season 1 holds the highest collective average score across the series.
Season 1 Details →Lowest score variance (σ = 0.93), maintaining an average of 4.9.
Season 1 finale: "My Little Sister's Advice Can't End Here (GOOD END)"
Episode Recap →Complete Episode Rating Matrix
Interactive score chart by season and episode number. Darker green indicates higher ratings; amber and red denote lower reception.
Ratings Analysis & Trajectory
Across 2 seasons and 25 episodes, Oreimo has earned an overall series rating of 5.7 out of 10. The series reached its critical peak early, showing a slight contraction in audience satisfaction in later chapters.
The single highest-rated hour of television in the series is Season 1, Episode 3 ("My Little Sister Can't Be This Cute"), rated at an extraordinary 7.5/10 with 2 ratings. Conversely, the lowest-rated installment is Season 2, Episode 13 ("Little Sisters Can't Fall In Love With Their Older Brothers"), landing at 2.3/10.
The most precipitous single-episode shift occurred in Season 2 between Episode 12 ("The Total Angel Ayase Can't Descend Upon My Place While I Live Alone", 5) and Episode 13 ("Little Sisters Can't Fall In Love With Their Older Brothers", 2.3), a swing of 2.7 points.
Top 10 Highest Rated Episodes of Oreimo
| Rank | Episode | Title | Score | Votes | Air Date |
|---|---|---|---|---|---|
| #1 | Season 1, Ep 3 | My Little Sister Can't Be This Cute | 7.5 | 2 | Oct 17, 2010 |
| #2 | Season 1, Ep 8 | My Little Sister Can't Be Animated | 7.5 | 2 | Nov 21, 2010 |
| #3 | Season 1, Ep 10 | My Little Sister Can't Be Cosplaying Like This | 7.5 | 2 | Dec 5, 2010 |
| #4 | Season 1, Ep 1 | My Little Sister Can't Be My Love | 7.0 | 3 | Oct 3, 2010 |
| #5 | Season 1, Ep 2 | My Little Sister Can't Bring Me to an IRL Meet | 7.0 | 3 | Oct 10, 2010 |
| #6 | Season 1, Ep 4 | My Little Sister Can't Be Going to Summerket | 7.0 | 2 | Oct 24, 2010 |
| #7 | Season 1, Ep 5 | My Little Sister's Best Friend Can't Be This XX | 7.0 | 2 | Oct 31, 2010 |
| #8 | Season 1, Ep 11 | My Little Sister Can't Be This Maid | 7.0 | 2 | Dec 12, 2010 |
| #9 | Season 2, Ep 1 | My Little Sister Can't Be Coming Back Again | 6.5 | 2 | Apr 7, 2013 |
| #10 | Season 1, Ep 6 | My Childhood Friend Can't Be This Cute | 5.0 | 1 | Nov 7, 2010 |