ok, let's go to the siege on the king's landing

Maedor Targaryen, the new identity of the transmigrator, second son of the mad king, is a prince good? a pity that when he transmigrated he already had the news of his brother's death and the lannister army was a few days away from arriving to sack the city, luckily a good system came with him, ok let's go to the siege war then