[8] On 18 February, Leniu played in Penrith's 13–12 upset loss to St Helens RFC in the 2023 World Club Challenge.

[11] In round 1 of the 2024 NRL season, Leniu was placed on report during the Sydney Roosters victory over Brisbane at the Allegiant Stadium in Las Vegas.

[15] On 21 May, the Sydney Roosters hit back at claims that Leniu had been taking illegal substances on a live stream along with fellow players Brandon Smith, Zach Dockar-Clay, Naufahu Whyte and Terrell May.

The club released a statement which read "The Sydney Roosters have been made aware of a small clip from a longer live stream that some on social media have claimed identifies behaviour that breaches NRL rules.

“The clip reveals no use of illicit substances or any other breach of NRL rules, however some see fit to make that grossly distorted and clearly damaging claim".