diff --git a/include/core.h b/include/core.h
index 0863217..a04c87b 100644
--- a/include/core.h
+++ b/include/core.h
@@ -19,7 +19,7 @@ extern "C" {
 typedef struct sasa {
     uint64_t  id;           // Sasa ID
     uint64_t  created_ts;   // Sasa creation timestamp
-    char     *path;         // Path to file
+    char     *path;         // File path
 } Sasa;
 
 // Tanzaku (短冊) - a tag record
@@ -104,8 +104,11 @@ int sasahyou_dump(Sasahyou *sasahyou, const char *path);
 // Add sasa to sasahyou
 int sasa_add(Sasahyou *sasahyou, const char *path);
 
-// Remove sasa from sasahyou
-int sasa_rem(Sasahyou *sasahyou, uint64_t sasa_id);
+// Remove sasa from sasahyou by ID
+int sasa_rem_by_id(Sasahyou *sasahyou, uint64_t sasa_id);
+
+// Remove sasa from sasahyou by file path
+int sasa_rem_by_path(Sasahyou *sasahyou, const char *path);
 
 // ==================== SAPPYOU SECTION ==================== //
 
@@ -133,8 +136,14 @@ int sappyou_dump(Sappyou *sappyou, const char *path);
 // Add new tanzaku to sappyou
 int tanzaku_add(Sappyou *sappyou, const char *name, const char *alias, const char *description);
 
-// Remove tanzaku from sappyou
-int tanzaku_rem(Sappyou *sappyou, uint64_t tanzaku_id);
+// Remove tanzaku from sappyou by ID
+int tanzaku_rem_by_id(Sappyou *sappyou, uint64_t tanzaku_id);
+
+// Remove tanzaku from sappyou by name
+int tanzaku_rem_by_name(Sappyou *sappyou, const char *name);
+
+// Remove tanzaku from sappyou by alias
+int tanzaku_rem_by_alias(Sappyou *sappyou, const char *alias);
 
 // ==================== SHOPPYOU SECTION ==================== //
 
diff --git a/src/core/sappyou.c b/src/core/sappyou.c
index 561413e..f855327 100644
--- a/src/core/sappyou.c
+++ b/src/core/sappyou.c
@@ -160,7 +160,7 @@ int tanzaku_add(Sappyou *sappyou, const char *name, const char *alias, const cha
     return 0;
 }
 
-int tanzaku_rem(Sappyou *sappyou, uint64_t tanzaku_id) {
+int tanzaku_rem_by_id(Sappyou *sappyou, uint64_t tanzaku_id) {
     if (tanzaku_id > sappyou->size) {
         fprintf(stderr, "Failed to remove tanzaku: target tanzaku does not exist\n");
         return 1;
@@ -175,3 +175,39 @@ int tanzaku_rem(Sappyou *sappyou, uint64_t tanzaku_id) {
 
     return 0;
 }
+
+int tanzaku_rem_by_name(Sappyou *sappyou, const char *name) {
+    for (uint64_t i = 0; i < sappyou->size; i++) {
+        if (strcmp(sappyou->contents[i].name, name) == 0) {
+            if (sappyou->contents[i].id != 0) {
+                sappyou->modified_ts = time(NULL);
+                sappyou->contents[i].id = 0;
+                sappyou->removed_cnt++;
+                return 0;
+            } else {
+                fprintf(stderr, "Failed to remove tanzaku: target tanzaku is already removed\n");
+                return 1;
+            }
+        }
+    }
+    fprintf(stderr, "Failed to remove tanzaku: target tanzaku does not exist\n");
+    return 1;
+}
+
+int tanzaku_rem_by_alias(Sappyou *sappyou, const char *alias) {
+    for (uint64_t i = 0; i < sappyou->size; i++) {
+        if (strcmp(sappyou->contents[i].alias, alias) == 0) {
+            if (sappyou->contents[i].id != 0) {
+                sappyou->modified_ts = time(NULL);
+                sappyou->contents[i].id = 0;
+                sappyou->removed_cnt++;
+                return 0;
+            } else {
+                fprintf(stderr, "Failed to remove tanzaku: target tanzaku is already removed\n");
+                return 1;
+            }
+        }
+    }
+    fprintf(stderr, "Failed to remove tanzaku: target tanzaku does not exist\n");
+    return 1;
+}
diff --git a/src/core/sasahyou.c b/src/core/sasahyou.c
index 38be40b..104c8e0 100644
--- a/src/core/sasahyou.c
+++ b/src/core/sasahyou.c
@@ -149,7 +149,7 @@ int sasa_add(Sasahyou *sasahyou, const char *path) {
     return 0;
 }
 
-int sasa_rem(Sasahyou *sasahyou, uint64_t sasa_id) {
+int sasa_rem_by_id(Sasahyou *sasahyou, uint64_t sasa_id) {
     if (sasa_id > sasahyou->size) {
         fprintf(stderr, "Failed to remove sasa: target sasa does not exist\n");
         return 1;
@@ -164,3 +164,21 @@ int sasa_rem(Sasahyou *sasahyou, uint64_t sasa_id) {
 
     return 0;
 }
+
+int sasa_rem_by_path(Sasahyou *sasahyou, const char *path) {
+    for (uint64_t i = 0; i < sasahyou->size; i++) {
+        if (strcmp(sasahyou->contents[i].path, path) == 0) {
+            if (sasahyou->contents[i].id != 0) {
+                sasahyou->modified_ts = time(NULL);
+                sasahyou->contents[i].id = 0;
+                sasahyou->removed_cnt++;
+                return 0;
+            } else {
+                fprintf(stderr, "Failed to remove sasa: target sasa is already removed\n");
+                return 1;
+            }
+        }
+    }
+    fprintf(stderr, "Failed to remove sasa: target sasa does not exist\n");
+    return 1;
+}