SPYxFAMILY: Kazoku no Shouzou

While on holiday, the Forgers go to a park, and a chance encounter leads them to becoming the models for a very famous painter. Fearing that it will interfere with her assassination mission, Yor continues to act out of character in an attempt to prevent her face from becoming public knowledge, but Loid is unsure of her true intentions...

(Source: Shueisha, translated)

Note: Includes 1 extra chapter.