After processing that huge memory, Itsuke seems to have a gold finger that is talent of creater of breathing techniques in demon slayer known as sword ancestral talent.
To test that talent, Itsuke pick up the training sword in home andstart swinging the sword according to memories and by swinging each sword,he was improving and correcting his mistakes .
He also tried to refine chakra by method in the memory and with his sword ancestral talent ,the chakra refining is done smoothly and chakra refining speed also increased with his talent.
He also start performing three body techniques according to memorie and three body techniques is displayed and more perfected due to his talent.
He also digest the ninja school knowledge and basic hand seals knowledge and started practicing seals and practicing seals and speed of seal doubled.
Itsuke then practiced the basic medical techniques according to memories and slowly adjusted to the memory and got perfect basic healing technique.
And then Itsuke mediate some time for to refreshing the mind and rests on the bed in his house.