Santa Koro-Sensei Assassination Classroom Ugly Christmas Sweater
Santa Koro-Sensei Assassination Classroom Ugly Christmas Sweater
Santa Koro Sensei Assassination Classroom Ugly Christmas Sweater
Santa Koro Sensei Assassination Classroom Ugly Christmas Sweater1

Santa Koro-Sensei Assassination Classroom Ugly Christmas Sweater

$39.95

Size Guide

Size Chart

SIZE LENGTH BUST SHOULDER SLEEVE
S 26.0 in 40.0 in 17.0 in 26.0 in
M 28.0 in 44.0 in 18.0 in 27.0 in
L 28.0 in 48.0 in 19.0 in 27.0 in
XL 30.0 in 52.0 in 20.0 in 28.0 in
2XL 30.0 in 56.0 in 21.0 in 28.0 in
3XL 31.0 in 60.0 in 22.0 in 28.0 in
4XL 32.0 in 64.0 in 24.0 in 29.0 in
5XL 33.0 in 68.0 in 25.0 in 29.0 in
6XL 34.0 in 73.0 in 26.0 in 29.1 in
  • Material: 95% Polyester - 5% Spandex.
  • Printing technique: dye-sublimation.
  • Coarse Needle Drawing 270g.
SIZE LENGTH BUST SHOULDER SLEEVE
S 67 cm 102 cm 42 cm 67 cm
M 70 cm 112 cm 45 cm 68 cm
L 72 cm 122 cm 48 cm 69 cm
XL 75 cm 132 cm 51 cm 70.5 cm
2XL 76 cm 142 cm 54 cm 71 cm
3XL 79 cm 152 cm 57 cm 71.5 cm
4XL 82 cm 162 cm 60 cm 72.5 cm
5XL 85 cm 172 cm 63 cm 73 cm
6XL 86 cm 182 cm 66 cm 74 cm
  • Material: 95% Polyester - 5% Spandex.
  • Printing technique: dye-sublimation.
  • Coarse Needle Drawing 270g.
SIZE LENGTH CHEST AGE (Years) SUGGESTED
2T 14.0 in 11.0 in 1-2 33-35 in
3T 15.0 in 12.0 in 2-3 36-39 in
4T 16.0 in 13.0 in 3-4 39-41 in
4 16.5 in 13.5 in 4-5 42-44 in
5 17.0 in 14.0 in 5 45-47 in
XS 18.0 in 15.0 in 6-8 48-50 in
S 19.0 in 15.5 in 8-10 50-54 in
M 21.0 in 16.0 in 10-12 54-58 in
L 23.0 in 18.0 in 12-13 58-62 in
XL 25.0 in 19.0 in 13-15 62-68 in
  • Material: 95% Polyester - 5% Spandex.
  • Printing technique: dye-sublimation.
SIZE LENGTH CHEST AGE (Years) SUGGESTED
2T 35.6 cm 27.9 cm 1-2 83.8-88.9 cm
3T 38.1 cm 30.5 cm 2-3 91.4-99.1 cm
4T 40.6 cm 33.0 cm 3-4 99.1-104.1 cm
4 41.9 cm 34.3 cm 4-5 106.7-111.8 cm
5 43.2 cm 35.6 cm 5 114.3-119.4 cm
XS 45.7 cm 38.1 cm 6-8 121.9-127.0 cm
S 48.3 cm 39.4 cm 8-10 127.0-137.2 cm
M 53.3 cm 40.6 cm 10-12 137.2-147.3 cm
L 58.4 cm 45.7 cm 12-13 147.3-157.5 cm
XL 63.5 cm 48.3 cm 13-15 157.5-172.7 cm
  • Material: 95% Polyester - 5% Spandex.
  • Printing technique: dye-sublimation.
  • $0.00
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This February, we only do 26 pieces of this limited edition. Get it before it's gone!
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Estimated arrival: Place your order today (standard shipping method) to receive the product(s) within Nov 12 - Nov 14

Products are fulfilled and shipping from the

Oct 30

Nov 04 - Nov 06

Nov 12 - Nov 14

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Unleash holiday chaos with the Santa Koro-Sensei Assassination Classroom Ugly Christmas Sweater. Featuring the iconic smiley-faced teacher in festive gear, this design fuses anime brilliance with seasonal satire—perfect for fans who love humor, rebellion, and meaningful storytelling.

Santa Koro-Sensei’s Jolly Rebellion: Assassination Classroom Ugly Christmas Sweater

Koro-Sensei, the unkillable alien teacher with a heart of gold, dons a Santa suit in this irreverent twist on holiday cheer. Known for mentoring Class 3-E in assassination and empathy, his exaggerated grin now beams from a sweater that mocks conformity with flair.

Santa Koro-Sensei Assassination Classroom Ugly Christmas Sweater
Santa Koro-Sensei Assassination Classroom Ugly Christmas Sweater

The design nods to the anime’s deeper themes—education reform, youth empowerment, and moral ambiguity—wrapped in festive absurdity. Snowflakes and ornaments clash with “HARD WORK” and “WELL DONE” badges, echoing the classroom’s struggle against systemic neglect and their fight for recognition.

This sweater isn’t just fanwear—it’s a wearable critique of authority and a tribute to unconventional heroes. Whether you’re an anime enthusiast or a rebel with a cause, it’s a bold statement that humor and heart can coexist in every stitch.

Shipping Policy & Manufacturing Info

Our shirts are made when ordered. Due to the time variability of on-demand manufacturing, we offer 2 options for how quickly you want to receive your order. You can select from the following choices in checkout.

Standard Shipping ($4.99+)

  • Orders using this option generally arrive 5-10 days (U.S. orders) and it takes 2 weeks for International orders after being manufactured and shipped. (See notes below)
  • Manufacturing times for this option vary more around busier times of the year or during extreme circumstances such as covid-19 shutdowns.

Shipping and expedited manufacturing ($19.99+) (U.S. Only)

  • Orders using this option jump to the front of the manufacturing queue which can generally save a couple days (or more during busier times of the year).
  • It's highly recommended to use this option if you are ordering for a specific event or holiday.
  • Orders using this option generally arrive 2-3 days after being manufactured and shipped. (U.S. only)
  • Orders using expedited manufacturing will be printed when the next batch of orders are processed which can vary depending on seasonality and other factors.

Please Note:

  • We do not guarantee shipping or arrival dates.
  • Manufacturing during the majority of the year takes between 1-5 business days (Mon-Fri) however can take more than a week during the heaviest shopping times of the year. Extreme circumstances such as covid-19 may delay order manufacturing and/or shipping by an additional week or more.
  • All manufacturing and shipping times mentioned are just estimates and will vary.
  • Some of our popular designs may be pre-printed and may ship out faster than less commonly ordered designs/style/color combinations.