diff --git a/src/tanabata/kazari.c b/src/tanabata/kazari.c
index 3a601d4..5a051ad 100644
--- a/src/tanabata/kazari.c
+++ b/src/tanabata/kazari.c
@@ -31,7 +31,7 @@ Tanzaku *tanabata_tanzaku_get_by_sasa(Tanabata *tanabata, uint64_t sasa_id) {
     uint64_t tanzaku_count = 0;
     Kazari *current_kazari = tanabata->shoppyou.database;
     for (uint64_t i = 0; i < tanabata->shoppyou.size; i++) {
-        if (current_kazari->sasa_id == sasa_id) {
+        if (current_kazari->sasa_id == sasa_id && current_kazari->tanzaku_id != HOLE_ID) {
             tanzaku_count++;
             tanzaku_list = realloc(tanzaku_list, tanzaku_count * sizeof(Tanzaku));
             tanzaku_list[tanzaku_count - 1] = tanabata_tanzaku_get_by_id(tanabata, current_kazari->tanzaku_id);
@@ -53,7 +53,7 @@ Sasa *tanabata_sasa_get_by_tanzaku(Tanabata *tanabata, uint64_t tanzaku_id) {
     uint64_t sasa_count = 0;
     Kazari *current_kazari = tanabata->shoppyou.database;
     for (uint64_t i = 0; i < tanabata->shoppyou.size; i++) {
-        if (current_kazari->tanzaku_id == tanzaku_id) {
+        if (current_kazari->tanzaku_id == tanzaku_id && current_kazari->sasa_id != HOLE_ID) {
             sasa_count++;
             sasa_list = realloc(sasa_list, sasa_count * sizeof(Sasa));
             sasa_list[sasa_count - 1] = tanabata_sasa_get_by_id(tanabata, current_kazari->sasa_id);
diff --git a/src/tanabata/sasa.c b/src/tanabata/sasa.c
index 6573a59..041769f 100644
--- a/src/tanabata/sasa.c
+++ b/src/tanabata/sasa.c
@@ -20,6 +20,16 @@ int tanabata_sasa_add(Tanabata *tanabata, const char *path) {
 }
 
 int tanabata_sasa_rem_by_id(Tanabata *tanabata, uint64_t sasa_id) {
+    if (sasa_id == HOLE_ID || sasa_id >= tanabata->sasahyou.size) {
+        return 1;
+    }
+    Kazari *current_kazari = tanabata->shoppyou.database;
+    for (uint64_t j = 0; j < tanabata->shoppyou.size; j++) {
+        if (current_kazari->sasa_id == sasa_id) {
+            current_kazari->sasa_id = HOLE_ID;
+        }
+        current_kazari++;
+    }
     return sasa_rem(&tanabata->sasahyou, sasa_id);
 }
 
@@ -27,6 +37,13 @@ int tanabata_sasa_rem_by_path(Tanabata *tanabata, const char *path) {
     Sasa *current_sasa = tanabata->sasahyou.database;
     for (uint64_t i = 0; i < tanabata->sasahyou.size; i++) {
         if (current_sasa->id != HOLE_ID && strcmp(current_sasa->path, path) == 0) {
+            Kazari *current_kazari = tanabata->shoppyou.database;
+            for (uint64_t j = 0; j < tanabata->shoppyou.size; j++) {
+                if (current_kazari->sasa_id == current_sasa->id) {
+                    current_kazari->sasa_id = HOLE_ID;
+                }
+                current_kazari++;
+            }
             return sasa_rem(&tanabata->sasahyou, current_sasa->id);
         }
         current_sasa++;
diff --git a/src/tanabata/tanzaku.c b/src/tanabata/tanzaku.c
index 474999d..3527dbb 100644
--- a/src/tanabata/tanzaku.c
+++ b/src/tanabata/tanzaku.c
@@ -13,6 +13,16 @@ int tanabata_tanzaku_add(Tanabata *tanabata, const char *name, const char *descr
 }
 
 int tanabata_tanzaku_rem_by_id(Tanabata *tanabata, uint64_t tanzaku_id) {
+    if (tanzaku_id == HOLE_ID || tanzaku_id >= tanabata->sappyou.size) {
+        return 1;
+    }
+    Kazari *current_kazari = tanabata->shoppyou.database;
+    for (uint64_t i = 0; i < tanabata->shoppyou.size; i++) {
+        if (current_kazari->tanzaku_id == tanzaku_id) {
+            current_kazari->tanzaku_id = HOLE_ID;
+        }
+        current_kazari++;
+    }
     return tanzaku_rem(&tanabata->sappyou, tanzaku_id);
 }
 
@@ -20,6 +30,13 @@ int tanabata_tanzaku_rem_by_name(Tanabata *tanabata, const char *name) {
     Tanzaku *current_tanzaku = tanabata->sappyou.database;
     for (uint64_t i = 0; i < tanabata->sappyou.size; i++) {
         if (current_tanzaku->id != HOLE_ID && strcmp(current_tanzaku->name, name) == 0) {
+            Kazari *current_kazari = tanabata->shoppyou.database;
+            for (uint64_t j = 0; j < tanabata->shoppyou.size; j++) {
+                if (current_kazari->tanzaku_id == current_tanzaku->id) {
+                    current_kazari->tanzaku_id = HOLE_ID;
+                }
+                current_kazari++;
+            }
             return tanzaku_rem(&tanabata->sappyou, current_tanzaku->id);
         }
         current_tanzaku++;