Chapter 120

Lack Of Ability (実力不足) is the one-hundred twentieth chapter of Oshi no Ko manga series. It is written by Aka Akasaka and illustrated by Mengo Yokoyari.

Summary
Ruby has had a busy day with live performances, going to school, recording for television, preparing for exams, and acting lessons for the movie. Despite going to bed early in the morning, she struggles to sleep and starts rehearsing for her role again, which Aqua notices.

At Ichigo Production, Inc, Kaburagi approaches Miyako, requesting her to give Ruby a strict acting lesson and adjust her schedule. Miyako is annoyed with the request, wondering how he could even make such a request after producing a show like Sweet Today.

Meanwhile, Kana is acting on a set directed by Shima. Despite the difficulty of the role, she performs beyond expectations. Kana then asks Ruby, who is at the film set, whether observing her acting was helpful. Ruby can feel the difference in skill between the two of them, so she asks Kana how she does it. Kana advises her to understand herself.

Back home, Ruby tries to take on the advice, but inevitably, her thoughts drift back to her time as Sarina, and the questions lingers on her mind whether her mother loved her or not.

Characters

 * Ruby Hoshino
 * Kana Arima
 * Mem-Cho
 * Minami Kotobuki
 * Shun Yoshizumi
 * Aqua Hoshino
 * Masaya Kaburagi
 * Miyako Saitou
 * Akane Kurokawa (flashback)
 * Frill Shiranui (flashback)
 * Masanori Shima
 * Sarina Tendouji (flashback)
 * Ai Hoshino (image)
 * Marina Tendouji (flashback)