In today's episode, Himawari referred to Boruto and Kawaki as O nīchan-tachi or Big Brothers : r/Boruto

Uzumaki-member (u/Uzumaki-member) - Reddit

Boruto episode 273: Twitter praises Himawari for her amazing display of skill

Yesterday's episode was so beautiful. Himawari will never allow Kawaki to be an outcast : r/Boruto

Boruto Episode 264: Twitter falls in love with Himawari again as she leads her class through a ghost hunt

The times when Kawaki saved Himawari and Naruto from getting killed : r/ Boruto

Daemon Knows Himawari Hidden Powers, Kawaki Betrayal To Naruto - Boruto Chapter 77

Kawaki and Himawari vs Hana Sensei Boruto: Naruto Next Generations

Boruto: Naruto Next Generations Kabin (TV Episode 2021) - IMDb

Cards for My precious friend ~Kurumi and Haruna~ : r/D4DJ

A Pocket full of Sunshine — This was one of the sweetest scenes in Boruto

Kawaki and Himawari vs Hana Sensei Boruto: Naruto Next Generations

NARUTO VS DELTA & KAWAKI SAVES HIMAWARI - Boruto Episode 198 Review