diff --git a/core/shoppyou.c b/core/shoppyou.c
index b6fe7c6..c5ac453 100644
--- a/core/shoppyou.c
+++ b/core/shoppyou.c
@@ -137,3 +137,35 @@ int kazari_rem(Shoppyou *shoppyou, uint64_t sasa_id, uint64_t tanzaku_id) {
     }
     return 0;
 }
+
+int kazari_rem_by_sasa(Shoppyou *shoppyou, uint64_t sasa_id) {
+    if (sasa_id == HOLE_ID) {
+        return 1;
+    }
+    for (uint64_t i = 0; i < shoppyou->size; i++) {
+        if (shoppyou->database[i].sasa_id == sasa_id) {
+            shoppyou->database[i].sasa_id = HOLE_ID;
+            shoppyou->hole_cnt++;
+            shoppyou->holes = realloc(shoppyou->holes, shoppyou->hole_cnt * sizeof(Kazari *));
+            shoppyou->holes[shoppyou->hole_cnt - 1] = shoppyou->database + i;
+            shoppyou->modified_ts = time(NULL);
+        }
+    }
+    return 0;
+}
+
+int kazari_rem_by_tanzaku(Shoppyou *shoppyou, uint64_t tanzaku_id) {
+    if (tanzaku_id == HOLE_ID) {
+        return 1;
+    }
+    for (uint64_t i = 0; i < shoppyou->size; i++) {
+        if (shoppyou->database[i].tanzaku_id == tanzaku_id) {
+            shoppyou->database[i].tanzaku_id = HOLE_ID;
+            shoppyou->hole_cnt++;
+            shoppyou->holes = realloc(shoppyou->holes, shoppyou->hole_cnt * sizeof(Kazari *));
+            shoppyou->holes[shoppyou->hole_cnt - 1] = shoppyou->database + i;
+            shoppyou->modified_ts = time(NULL);
+        }
+    }
+    return 0;
+}
diff --git a/include/core.h b/include/core.h
index 1f98686..f3e833b 100644
--- a/include/core.h
+++ b/include/core.h
@@ -163,6 +163,12 @@ int kazari_add(Shoppyou *shoppyou, uint64_t sasa_id, uint64_t tanzaku_id);
 // Remove kazari from shoppyou
 int kazari_rem(Shoppyou *shoppyou, uint64_t sasa_id, uint64_t tanzaku_id);
 
+// Remove all kazari with a specific sasa ID from shoppyou
+int kazari_rem_by_sasa(Shoppyou *shoppyou, uint64_t sasa_id);
+
+// Remove all kazari with a specific tanzaku ID from shoppyou
+int kazari_rem_by_tanzaku(Shoppyou *shoppyou, uint64_t tanzaku_id);
+
 #ifdef __cplusplus
 }
 #endif