This art comes from the official twitter account. Check out the Crunchyroll article for additional information. Synopsis for the source manga from AniList:
The master spy codenamed <Twilight> has spent his days on undercover missions, all for the dream of a better world. But one day, he receives a particularly difficult new order from command. For his mission, he must form a temporary family and start a new life?! A Spy/Action/Comedy about a one-of-a-kind family!
It’s probably the most accessible anime I openly recommend. It’s well-animated, strong visual identity, simple premise, unique setting for an anime, and an excellent adaptation of the comedy.
I emphasis the comedy and accessibility because, historically, anime has suffered from borderline cringey tropes/humour (fanservice, perverted humour, women sharing one personality, etc) which limits it’s audience to a specific demo. SpyXFamily blends western aesthetics with clean humour all from the perspective of a realistic 5yo that sees the world wonderfully juxtaposed to an era of turmoil.
You may not love it but I feel confident recommending this as a gateway to other great slice of life animes (Like Skip & Loafer, Dungeon Meshi).