‘But once you’re past the tip of a rapier, the blade is relatively harmless,’ argued Akiko. ‘All you need to do is evade the first attack, then move in.’

Signor Horatio gave an arch grin. ‘Ah, signorina! That’s why we carry a parrying dagger in our other hand,’ he said, patting the slim stiletto blade on his hip. ‘We can parry or bind the opponent’s blade, disarm them or deliver a strike – but we’re getting ahead of ourselves. You may be experienced in sword work but one step at a time. Let’s begin with the basic warding posture and a straight lunge.’

Signor Horatio took up a duelling stance: his left leg to the rear, his right foot pointing forward; his sword arm out in front, his left hand close to his chest. ‘Notice how I lean back and hold my head as far away from my opponent as possible,’ he explained. ‘Most sword masters’ stances are more centred, but with my stance the vital organs of head and heart are kept at a safer distance from my opponent’s rapier. Moreover, when I make a lunge, my range is very deceptive – and far greater than anticipated.’

Jack and Akiko imitated his stance. Signor Horatio examined them both, making small adjustments as he went. ‘Hold your left hand higher … it’s a secondary guard for your body and head … Point the front foot forward, your back one at right angles for maximum stability and power … good … Now I want you to lunge like this …’

Signor Horatio took a step with his front foot, leaning sharply into the attack and extending his sword arm out straight, while flinging his left arm back. He looked like an arrow in flight. The sword master repeated the move several times until he was certain his students had understood the technique. ‘Now lunge!’

Jack and Akiko leapt forward, their rapiers thrusting at imaginary enemies. To Jack, who was used to a more upright and guarded posture in kenjutsu, the sheer boldness and apparent overreach of the lunge felt distinctly unsettling.

‘Don’t extend your knee past your toes, signor,’ advised Signor Horatio. ‘It results in a slower recovery. And you, signorina, throw your left hand back for balance … Both of you, hold the sword hand a little higher – the hilt needs to protect your face …’