How to access each column on many-to-many relationships in room database android

Question

so here is the diagram of the database

What i wanna do is to join all these tables to get every column in each table, i have seen many-to-many relationship diagram examples in room example example1 example2 example3 but on these examples the relation table (OrderItem) only has 2 columns which the ids of the other tables (Order, Item), they ignore the value on relation table. But for me i also want to access/get the columns on relation table (OrderItem) that is quantity and total_price

I have tried something like this

ItemModel

@Entity(tableName = "item_table")
data class ItemModel(

  @PrimaryKey
  @ColumnInfo(name = "id")
  val itemId: String,
  @ColumnInfo(name = "item_name")
  var itemName: String,
  @ColumnInfo(name = "item_price")
  var itemPrice: String,
  @ColumnInfo(name = "item_stock")
  var itemStock: Int
)

OrderModel

@Entity(tableName = "order_table")
data class OrderModel(

  @PrimaryKey
  @ColumnInfo(name = "id")
  val orderId: String,
  @ColumnInfo(name = "order_total_price")
  val orderTotalPrice: String,
  @ColumnInfo(name = "order_pay")
  val orderPay: String,
  @ColumnInfo(name = "order_exchange")
  val orderExchange: String
)

OrderItemModel

@Entity(tableName = "order_item_table", primaryKeys = ["order_id", "item_id"])
data class OrderItemModel(

  @ColumnInfo(name = "order_id", index = true)
  var orderId: String,
  @ColumnInfo(name = "item_id", index = true)
  var itemId: String,
  @ColumnInfo(name = "quantity")
  val qty: Int,
  @ColumnInfo(name = "price")
  val price: String,
  @ColumnInfo(name = "total_price")
  val totalPrice: String
)

OrderWithItems

data class OrderWithItems(

  @Embedded
  val order: OrderModel,

  @Relation(
      entity = OrderItemModel::class,
      parentColumn = "id",
      entityColumn = "order_id"
  )
  val orderItems: List<OrderItemModel>,

  @Relation(
      entity = ItemModel::class,
      parentColumn = "id",
      entityColumn = "id",
      associateBy = Junction(
          OrderItemModel::class,
          parentColumn = "order_id",
          entityColumn = "item_id"
      )
  )
  val items: List<ItemModel>
)

But this give me inconcistence result, sometime the item_name on index 0 (from ItemModel) matches with the quantity on index 0 (from OrderItemModel) and sometimes not. Then what is the correct way to access each column on every table using room database?