is a Japanese web novel series written by Umika. It was serialized online from September 2019 to July 2021 on the user-generated novel publishing website Shà Âsetsuka ni Narà Â. A manga adaptation with art by Reku Hayase has been serialized online via Shusuisha's Shà Âjo Sengen digital magazine since September 2020 and has been collected in eight tankà Âbon volumes. The manga is published digitally in English by Coolmic. A light novel version with illustrations by Hayase began publication digitally under Shusuisha's Shà Âjo Sengen Novel imprint in September 2023. A short-form anime television series adaptation aired from July to September 2024, with a second season airing from January to March 2025.
Written by Umika, Head Start at Birth was serialized as a web novel on the Shà Âsetsuka ni Narà  website from September 29, 2019, to July 6, 2021.
A short-form anime television series adaptation was announced on June 4, 2024. It aired from July 7 to September 22, 2024, on TVS, and ran for 12 episodes.
A second season was announced on December 1, 2024. It aired from January 5 to March 23, 2025, on TVS.