Tawawa on Monday (Series)

Ai-chan

Ai-chan is the main character of the Getsuyoubi no Tawawa series.

Sayaka Harada

Kouhai-chan

Kouhai-chan is a character featured in the visual novel and anime Kud Wafter.

Ai Kayano

Maegami-chan

Based on the provided image gallery, Maegami-chan is a character from the Rozen Maiden anime (2013) and possibly the manga.

Rie Takahashi

Oniisan

Onii-san, also known as the Salaryman, is a recurring character in the Getsuyoubi no Tawawa series.

Junji Majima

Senpai

Senpai is an unnamed female high school student and the girlfriend of Yuuna Asana.

Volley-bu-chan

Lee Min-Hyeong, also known as Kang Joon-Sang, is a 28-year-old architect who suffers from amnesia after an accident.

Shizuka Ishigami

Cheer-chan

Keiko Tsukamato, also known as Cheer-chan, is one of Rina’s best friends.

Marika Kouno

Okaasan

Okaa-san is the mother of Ai-chan and Imouto-chan in the Getsuyoubi no Tawawa series.

Kikuko Inoue

Imouto-chan

Imouto-chan is a major character in the Getsuyoubi no Tawawa series, known as Ai-chan's younger sister.

Yuka Iguchi

Shika Eiseishi-san

Shika Eiseishi-san, also known as Dentist-san, is a minor character in the Getsuyoubi no Tawawa series.

Mamiko Noto

Tokumori-san

Tomori is a male character whose species and detailed background are currently unknown.

Hisako Kanemoto

Trainer-san

Takashi Sano, also known as Trainer-san, is a character whose role is currently undefined beyond the title "Trainer-san".

Minami Tsuda

Kachou

Kachou is an anime-exclusive character in Getsuyoubi no Tawawa, serving as Onii-san's boss.

Kouichi Souma

Sensei

Sensei, the future version of Katagaki Naomi, is a serious and determined individual driven by the desire to revive his deceased girlfriend.

Junichi Yanagita