
Quick answer — Hanako Oku worked on The Girl Who Leapt Through Time (Insert Song Performance), Your Light: Kase-san and Morning Glories (Theme Song Performance), Seiren (Theme Song Performance).
Hanako Oku worked on The Girl Who Leapt Through Time (Insert Song Performance), Your Light: Kase-san and Morning Glories (Theme Song Performance), Seiren (Theme Song Performance).