diff --git a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/all/NineMangaParser.kt b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/all/NineMangaParser.kt
index 5d9ef843..4ef6b192 100644
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/all/NineMangaParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/all/NineMangaParser.kt
@@ -35,6 +35,11 @@ internal abstract class NineMangaParser(
 		SortOrder.POPULARITY,
 	)
 
+	override val availableStates: Set<MangaState> = EnumSet.of(
+		MangaState.ONGOING,
+		MangaState.FINISHED,
+	)
+
 	override fun intercept(chain: Interceptor.Chain): Response {
 		val request = chain.request()
 		val newRequest = if (request.url.host == domain) {
@@ -45,37 +50,60 @@ internal abstract class NineMangaParser(
 		return chain.proceed(newRequest)
 	}
 
-	override suspend fun getListPage(
-		page: Int,
-		query: String?,
-		tags: Set<MangaTag>?,
-		sortOrder: SortOrder,
-	): List<Manga> {
+	override suspend fun getListPage(page: Int, filter: MangaListFilter?): List<Manga> {
 		val url = buildString {
 			append("https://")
 			append(domain)
-			when {
-				!query.isNullOrEmpty() -> {
+			when (filter) {
+				is MangaListFilter.Search -> {
 					append("/search/?name_sel=&wd=")
-					append(query.urlEncoded())
+					append(filter.query.urlEncoded())
 					append("&page=")
+					append(page)
+					append(".html")
 				}
 
-				!tags.isNullOrEmpty() -> {
-					append("/search/?category_id=")
-					for (tag in tags) {
-						append(tag.key)
-						append(',')
+				is MangaListFilter.Advanced -> {
+					if (filter.tags.isNotEmpty()) {
+						append("/search/?category_id=")
+						for (tag in filter.tags) {
+							append(tag.key)
+							append(',')
+						}
+
+						filter.states.oneOrThrowIfMany()?.let {
+							append("&completed_series=")
+							when (it) {
+								MangaState.ONGOING -> append("no")
+								MangaState.FINISHED -> append("yes")
+								else -> append("either")
+							}
+						}
+						append("&page=")
+					} else {
+						append("/category/")
+						if (filter.states.isNotEmpty()) {
+							filter.states.oneOrThrowIfMany()?.let {
+								when (it) {
+									MangaState.ONGOING -> append("updated_")
+									MangaState.FINISHED -> append("completed_")
+									else -> append("either")
+								}
+							}
+						} else {
+							append("index_")
+						}
 					}
-					append("&page=")
+					append(page)
+					append(".html")
 				}
 
-				else -> {
+				null -> {
 					append("/category/index_")
+					append(page)
+					append(".html")
 				}
 			}
-			append(page)
-			append(".html")
 		}
 		val doc = webClient.httpGet(url).parseHtml()
 		val root = doc.body().selectFirst("ul.direlist") ?: doc.parseFailed("Cannot find root")
diff --git a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/fr/BentomangaParser.kt b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/fr/BentomangaParser.kt
index 7b029cd5..ae86a442 100644
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/fr/BentomangaParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/fr/BentomangaParser.kt
@@ -28,35 +28,55 @@ internal class BentomangaParser(context: MangaLoaderContext) : PagedMangaParser(
 
 	override val configKeyDomain = ConfigKey.Domain("bentomanga.com", "www.bentomanga.com")
 
+	override val availableStates: Set<MangaState> = EnumSet.allOf(MangaState::class.java)
+
 	init {
 		paginator.firstPage = 0
 		searchPaginator.firstPage = 0
 	}
 
-	override suspend fun getListPage(
-		page: Int,
-		query: String?,
-		tags: Set<MangaTag>?,
-		sortOrder: SortOrder,
-	): List<Manga> {
+	override suspend fun getListPage(page: Int, filter: MangaListFilter?): List<Manga> {
 		val url = urlBuilder()
+			.host(domain)
 			.addPathSegment("manga_list")
 			.addQueryParameter("limit", page.toString())
-			.addQueryParameter(
-				"order_by",
-				when (sortOrder) {
-					SortOrder.UPDATED -> "update"
-					SortOrder.POPULARITY -> "views"
-					SortOrder.RATING -> "top"
-					SortOrder.NEWEST -> "create"
-					SortOrder.ALPHABETICAL -> "name"
-				},
-			)
-		if (!tags.isNullOrEmpty()) {
-			url.addQueryParameter("withCategories", tags.joinToString(",") { it.key })
-		}
-		if (!query.isNullOrEmpty()) {
-			url.addQueryParameter("search", query)
+		when (filter) {
+			is MangaListFilter.Search -> {
+				url.addQueryParameter("search", filter.query)
+			}
+
+			is MangaListFilter.Advanced -> {
+
+				url.addQueryParameter(
+					"order_by",
+					when (filter.sortOrder) {
+						SortOrder.UPDATED -> "update"
+						SortOrder.POPULARITY -> "views"
+						SortOrder.RATING -> "top"
+						SortOrder.NEWEST -> "create"
+						SortOrder.ALPHABETICAL -> "name"
+					},
+				)
+
+				if (filter.tags.isNotEmpty()) {
+					url.addQueryParameter("withCategories", filter.tags.joinToString(",") { it.key })
+				}
+
+				filter.states.oneOrThrowIfMany()?.let {
+					url.addQueryParameter(
+						"state",
+						when (it) {
+							MangaState.ONGOING -> "1"
+							MangaState.FINISHED -> "2"
+							MangaState.PAUSED -> "3"
+							MangaState.ABANDONED -> "5"
+						},
+					)
+				}
+
+			}
+
+			null -> url.addQueryParameter("order_by", "update")
 		}
 		val root = webClient.httpGet(url.build()).parseHtml().requireElementById("mangas_content")
 		return root.select(".manga[data-manga]").map { div ->
@@ -109,7 +129,7 @@ internal class BentomangaParser(context: MangaLoaderContext) : PagedMangaParser(
 				"En pause" -> MangaState.PAUSED
 				else -> null
 			},
-			author = root.selectFirst(".datas_more-authors-people")?.textOrNull().assertNotNull("author"),
+			author = root.selectFirst(".datas_more-authors-people")?.textOrNull(),
 			chapters = run {
 				val input = root.selectFirst("input[name=\"limit\"]") ?: return@run parseChapters(root)
 				val max = input.attr("max").toInt()