Tawawa on Monday: Season 1 - Ai-chan and the Stairs to Adulthood (2016) - (S1E12) - Backdrops — The Movie Database (TMDB)

One Monday morning, Salaryman asked what Ai did during the Christmas day, which she initially refuses to answer. Later, she revealed that she 'has taken a step into adulthood', becoming from 'I-chan' to 'J-chan'.

Ai-chan

Tawawa on Monday Anime Gets 2nd Season With Episode 1 Now Streaming (Updated) - News - Anime News Network

Tawawa on Monday (TV Series 2016-2021) — The Movie Database (TMDB)

Max Factory Tawawa on Monday: Ai-Chan 1: 7 Scale PVC Figure

Tawawa on Monday (TV Series 2016-2021) — The Movie Database (TMDB)

Beyond Beyond (2014) — The Movie Database (TMDB)

Ushiro no shoumen daare (1991) - IMDb

Tawawa on Monday (TV Series 2016–2021) - IMDb

Tawawa on Monday 1x12 Ai-chan and the Stairs to Adulthood - Trakt

Tawawa on Monday: Where to Watch and Stream Online