diff --git a/codewars/8kyu/find-the-first-non-consecutive-number/koronya.js b/codewars/8kyu/find-the-first-non-consecutive-number/koronya.js
new file mode 100644
index 000000000..4381502f7
--- /dev/null
+++ b/codewars/8kyu/find-the-first-non-consecutive-number/koronya.js
@@ -0,0 +1,21 @@
+// [JS][8kyu] Find the first non-consecutive number
+// find-the-first-non-consecutive-number
+// https://www.codewars.com/kata/58f8a3a27a5c28d92e000144/train/javascript
+
+const firstNonConsecutive = (arr) => {
+  const arrLen = arr.length
+  let prev = arr[0]
+  for (let i = 1; i < arrLen; i += 1) {
+    const now = arr[i]
+    if (now - prev !== 1) {
+      return arr[i]
+    }
+    prev = now
+  }
+  return null
+}
+
+firstNonConsecutive([1, 2, 3, 4, 6, 7, 8]) === 6
+firstNonConsecutive([1, 2, 3, 4]) === null
+
+