- 2019.11.18 - Joined SKE48 as a Kenkyuusei
- 2022.01.15 - Promoted to Team KII (SKE48 New Generation Concert 2021)
- 2022.02.28 - Graduated from Team KII (Announcement: February 15, 2022)
- Nagisa no Image (So~Yu~Toko Aru Yo Ne?)
- Sekai no Super Hero (Ano Koro no Kimi wo Mitsuketa)
- Janai Romantic (Kokoro ni Flower)
- Light Stick Colors: Red, white, purple.
- Hobbies: Cosplay, sleeping, sky-diving.
- Special skills: English conversation.
- Good friends with: Kato Yui (HayaKato)
- Future dream: Before a person with presence.
- Favorite food: Ramen, katsudon, avocado, melonpan
- Favorite word: Sono hi wo tokoton tanoshimu
- A short message: One step in a time, I'll do towards my dream, so please support me!
- Showroom Audition Number: #66
- Failed MNL48's 1st Generation auditions.
- Was part of the Philippine-based idol group Aidoru Sozai under the name "Hayayan".
- Her official profile says her birthplace is Saitama, Japan, which goes against her claims during her activity in the Philippines and audition.
- After graduating from SKE48, Hayaka tried to work at a ramen shop, but was rejected because she was once an idol.
- Tested positive for COVID-19 on May 10, 2022.