[9] The group performed a revival of SKE48 Team S's stage "Te o Tsunaginagara" (手をつなぎながら, While Holding Hands), with Kodama serving as the center.

On 28 April, the final day of AKB48's spring concert at the Nippon Budokan, Kodama was chosen to be a concurrent member of AKB48's Team A.

[14] From May to 8 June, AKB48 held their annual Senbatsu Sōsenkyo (選抜総選挙, Selection General Election), an event that allows fans to vote their favourite members from AKB48 Group into the promotional line-up of AKB48's next single.

[17] On 19 June, she made her first appearance as a member of AKB48's Team A and performed at the AKB48 theater in Akihabara, Tokyo for the first time.

[18] At AKB48's reshuffling event held on 24 February 2014, Kodama was moved from AKB48's Team A to Team K.[19] In June, she ranked 21st at the annual AKB48 Senbatsu Sōsenkyo, and sang on the "Kokoro no Placard" B-side "Dareka ga Nageta Ball" (誰かが投げたボール, The Ball that Someone Threw).

[27] At the annual AKB48 Senbatsu Sōsenkyo in June 2016, Kodama received 60,591 votes and ranked 9th, making her a member of the main line-up of AKB48's 45th single, "Love Trip / Shiawase o Wakenasai".

At AKB48's 12 Anniversary concert on 8 December, it was announced that Kodama's concurrent position in AKB48's Team B would be ending.

[34] On 27 December, HKT48's management announced that Kodama was going on hiatus due to poor health condition.

On June 9, 2019, Kodama left HKT48 and switched agencies to Avex Asunaro to pursue an acting career.