diff --git a/tools/bin/hako b/tools/bin/hako
new file mode 100644
index 00000000..92260c9c
--- /dev/null
+++ b/tools/bin/hako
@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "$0")/../.." && pwd)"
+BIN="$ROOT_DIR/target/release/nyash"
+
+if [[ ! -x "$BIN" ]]; then
+  echo "[info] building (release) ..." >&2
+  cargo build --release -q
+fi
+
+exec "$BIN" "$@"
+
diff --git a/tools/bin/hakorune b/tools/bin/hakorune
new file mode 100644
index 00000000..dbdc1e68
--- /dev/null
+++ b/tools/bin/hakorune
@@ -0,0 +1,6 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "$0")/../.." && pwd)"
+"$ROOT_DIR/tools/bin/hako" "$@"
+
diff --git a/tools/hako-check/README.md b/tools/hako-check/README.md
index c3459a03..60c7fcbd 100644
--- a/tools/hako-check/README.md
+++ b/tools/hako-check/README.md
@@ -5,10 +5,11 @@ Purpose
 - Useful while Python/llvmlite migration is in-flight to keep scripts healthy.
 
 Usage
-- Build nyash:
+- Build once (auto-build if missing):
   - cargo build --release
 - Run checker:
   - tools/hako-check/hako-check.sh path/to/file.hako
+  - or set alias explicitly: HAKO_BIN=tools/bin/hako tools/hako-check/hako-check.sh file.hako
 
 Behavior
 - Runs: nyash --backend mir --verify <file>
@@ -17,6 +18,8 @@ Behavior
   - 2+: Parse/MIR verify failure (nyash returns non‑zero; checker forwards)
 
 Notes
+- Binary alias
+  - Preferred alias: tools/bin/hako (or tools/bin/hakorune)
+  - Backward‑compat: target/release/nyash も利用可（自動検出）
 - This MVP only checks a single file and depends on the Rust parser.
 - Extend with flags (parser selection, JSON emit) as migration progresses.
-
diff --git a/tools/hako-check/hako-check.sh b/tools/hako-check/hako-check.sh
index 9aa38b39..60295d5d 100644
--- a/tools/hako-check/hako-check.sh
+++ b/tools/hako-check/hako-check.sh
@@ -7,7 +7,17 @@ if [[ $# -lt 1 ]]; then
 fi
 
 ROOT_DIR="$(cd "$(dirname "$0")/../.." && pwd)"
-BIN="$ROOT_DIR/target/release/nyash"
+# Allow alias: HAKO_BIN overrides binary path. Otherwise prefer 'hako' alias, then 'nyash'.
+BIN="${HAKO_BIN:-}"
+if [[ -z "${BIN}" ]]; then
+  if [[ -x "$ROOT_DIR/tools/bin/hako" ]]; then
+    BIN="$ROOT_DIR/tools/bin/hako"
+  elif [[ -x "$ROOT_DIR/tools/bin/hakorune" ]]; then
+    BIN="$ROOT_DIR/tools/bin/hakorune"
+  else
+    BIN="$ROOT_DIR/target/release/nyash"
+  fi
+fi
 FILE="$1"
 
 if [[ ! -x "$BIN" ]]; then
@@ -23,4 +33,3 @@ fi
 # Parse → MIR build → verify (no execute)
 "$BIN" --backend mir --verify "$FILE"
 echo "OK: $FILE"
-