This scene from the Boruto Movie was so endearing. Naruto, who grew up an unloved orphan being able to teach something to his son and be there for him is beautiful to me.
It also reminded me of another touching Father-son moment in anime, also revolving around a lot of blue-colored energy.
The Father-Son Kamehameha, from the Cell Saga of Dragon Ball Z.
This was another awesome moment of Father-Son brilliance, where Gohan is nearly finished in his fight against Cell, and Goku is gone. The spirit of Goku combined with the last-ditch strength of Gohan culminates in this hugely powerful one-handed (or three handed?) kamehameha that finishes Cell.