yep

Shogi.Api/Repositories/Dto/MoveDto.cs

@@ -5,6 +5,6 @@ namespace Shogi.Api.Repositories.Dto;
 /// <summary>
 /// Useful with Dapper to read from database.
 /// </summary>
-public readonly record struct MoveDto(string From, string To, bool IsPromotion, WhichPiece? PieceFromHand)
+public readonly record struct MoveDto(string? From, string To, bool? IsPromotion, WhichPiece? PieceFromHand)
 {
 }

Shogi.Api/Repositories/SessionRepository.cs

@@ -1,6 +1,7 @@
 using Dapper;
+using Shogi.Api.Extensions;
 using Shogi.Api.Repositories.Dto;
-using Shogi.Domain.Aggregates;
+using Shogi.Domain;
 using System.Data;
 using System.Data.SqlClient;
 
@@ -65,6 +66,15 @@ public class SessionRepository : ISessionRepository
 		}
 		return session;
 	}
+
+	public async Task CreateMove(string sessionName, Contracts.Api.MovePieceCommand command)
+	{
+		using var connection = new SqlConnection(connectionString);
+		await connection.ExecuteAsync(
+			"session.CreateMove",
+			new { },
+			commandType: CommandType.StoredProcedure);
+	}
 }
 
 public interface ISessionRepository