diff --git a/content/challenges/100.md b/content/challenges/100.md
new file mode 100644
index 0000000..7bb9248
--- /dev/null
+++ b/content/challenges/100.md
@@ -0,0 +1,110 @@
+---
+japanese:
+  - - - pos: particle
+        text: ながら
+        dictionary: 乍ら
+      - pos: particle
+        text: の
+      - pos: noun
+        text:
+          - 優: ゆう
+          - 等: とう
+          - 生: せい
+      - dictionary: ~
+        text: "　"
+      - pos: noun
+        text:
+          - 今: こ
+          - 宵: よい
+      - pos: particle
+        text: も
+      - pos: noun
+        text:
+          - 自: じ
+          - 分: ぶん
+      - pos: particle
+        text: と
+      - pos: noun
+        text:
+          - 密: みっ
+          - 会: かい
+      - pos: verb
+        text: です
+  - - - pos: adjective
+        text: しんどい
+      - pos: particle
+        text: わ
+      - dictionary: ~
+        text: "　"
+      - pos: adjective
+        text: しんどい
+      - pos: particle
+        text: わ
+      - dictionary: ~
+        text: "　"
+      - pos: phrase
+        text: あー
+        dictionary: 嗚呼
+      - pos: adverb
+        text: つらつら
+        dictionary: 倩々
+      - pos: noun
+        text:
+          - 合: がっ
+          - 掌: しょう
+  - - - pos: noun
+        text: ほんと
+        dictionary: 本当
+      - pos: particle
+        text: は
+      - pos: noun
+        text:
+          - 劣: れっ
+          - 等: とう
+          - 生: せい
+      - dictionary: ~
+        text: "　"
+      - pos: noun
+        text: あたし
+        dictionary: 私-1
+      - pos: particle
+        text: に
+      - pos: noun
+        text:
+          - 説: しっ
+          - 教: きょう
+      - pos: verb
+        text: です
+  - - - pos: adjective
+        text: しんどい
+      - pos: particle
+        text: わ
+      - dictionary: ~
+        text: "　"
+      - pos: adjective
+        text: しんどい
+      - pos: particle
+        text: わ
+      - dictionary: ~
+        text: "　"
+      - pos: adverb
+        text: もー
+        dictionary: もう
+      - pos: adverb
+        text: いやいや
+        dictionary: 嫌々
+      - pos: noun
+        text:
+          - 絶: ぜっ
+          - 交: こう
+english:
+  - Part-time patrician, another clandestine rendezvous with myself 
+  - Drained, oh so drained, introspection and in prayer
+  - But really a plebeian, preach to me myself and I 
+  - Drained, oh so drained, I guess we need to break up 
+date: 2023-02-21
+---
+
+This week's challenge is from デビルじゃないもん/*(Not) A Devil*'s lyrics ([YouTube](https://www.youtube.com/watch?v=lMEt3RdqB9Y)):
+
+{{< youtube lMEt3RdqB9Y >}}
diff --git a/content/challenges/30.md b/content/challenges/30.md
index 7291bd0..fa26679 100644
--- a/content/challenges/30.md
+++ b/content/challenges/30.md
@@ -48,6 +48,6 @@ english:
 date: 2021-09-07
 ---
 
-This week's challenge is from [浴]{よく}[槽]{そう}とネオンテトラ's lyrics ([YouTube](https://www.youtube.com/watch?v=xlU8pUQ7mn8)):
+This week's challenge is from [浴]{よく}[槽]{そう}とネオンテトラ's lyrics ([YouTube](https://www.youtube.com/watch?v=NrfLlgv02hs)):
 
-{{< youtube xlU8pUQ7mn8 >}}
\ No newline at end of file
+{{< youtube NrfLlgv02hs >}}
diff --git a/content/challenges/84.md b/content/challenges/84.md
index e1687b4..d94ed4c 100644
--- a/content/challenges/84.md
+++ b/content/challenges/84.md
@@ -160,6 +160,6 @@ japanese:
 date: 2022-11-08
 ---
 
-This week's challenge is from the lyrics of Clannad's だんご[大]{だい}[家]{か}[族]{ぞく} ([YouTube](https://www.youtube.com/watch?v=0NF1lPiMXkY)):
+This week's challenge is from the lyrics of Clannad's だんご[大]{だい}[家]{か}[族]{ぞく} ([YouTube](https://www.youtube.com/watch?v=kAImtagQL_I)):
 
-{{< youtube 0NF1lPiMXkY >}}
+{{< youtube kAImtagQL_I >}}