『 Cheerful Sensation Vol. 1 』 24 February 2025 I made a free PDF artbook to celebrate Chis-A's 3rd anniversary. Happy Birthday Chisei-chan! This contains art of Chis-A I have drawn from 2023-2024, with some never-before-seen works and doodles of the (cutest) default VoiSona voice library drawn by me, plus a bonus art for a song released in February 2025. Thank you Rouko for proofreading the Japanese text!