On 19 January, prior to her debut, Roco reached 20,000 subscribers on her YouTube channel.
On 20 January, on the day of her first stream, Roco reached 50,000 subscribers on her YouTube channel.
On 28 January, the 7 Livers who made their debuts the previous week held their first full group collab stream on Kuramochi Meruto's channel. During this stream, they revealed their unit name for the first time: Idios.
On 4 February, Roco's channel became open for monetization, as well as channel membership two days later.
On 28 February, VTuber Style magazine's March issue went on sale, featuring an interview with the members of Idios.
On 6 May, Roco reached 100,000 subscribers on her YouTube channel during an endurance stream she held with the goal of reaching the milestone.
On 5 June, Roco released her first music cover, of ARuFa's "Boku No Yume, MECHAKUSO MUGEN WAKI" (ぼくの夢、メチャクソ無限湧き), which she also illustrated and animated the video for.
On 10 July, Roco's official fanclub was opened.
On 16 July, Idios held a stream on Igarashi Rika's channel to celebrate their half-anniversary since debut. During this stream, they announced the release of their line of half-anniversary goods as well as their first group cover, of halyosy's "Connecting".
On 24 August, Roco debuted her second 2D outfit.
From 4 November to 11 November, coinciding with the second anniversary of their VTA debuts (and their first with Roco present as a NIJISANJI Liver), the 8 former members of VTA's first generation who ultimately debuted with NIJISANJI held the Ano 8-Nin Nayutan Medley (あの8人でナユタンメドレー), a cover relay in which each member sang a different NayutalieN song. Roco released a cover of "Dance of Venus" (金星のダンス) on 6 November as part of this relay. The relay concluded with a cover of "Alien Alien" (エイリアンエイリアン) by the full group on 12 November.
On 12 December, she held her first stream on her TwitCasting channel.
At NijiFes 2023, which was held from 23 December to 24 December, she was part of the official broadcasting team for the Day 1 stream, and took part in the "Mezase Ichininmae!" Shinjin Dakkyaku Challenge stage on Day 2.