Art credit goes to Yuu Shishio on Twitter.
Link to their acc: https://twitter.com/yuushishio
Sanji, along with Zeff - his adoptive father - have just moved into a new neighborhood. He is very bothered by the fact that he has to start over, even if it's supposedly easy to when you are young. His first day was quite boring until he meets a green-haired boy that reminds him of that one rare algae. Zoro is his name and he is actually quite an amazing friend. But after the other children tell him that they haven't seen him so friendly with anyone before, their relationship might change into the cute couple that children make.