- Birth Name: Yahagi Moeka (矢作萌夏)
- Nicknames: Moechan (もえちゃん), Fukuchan (ふくちゃん), Monta (もんた), Moeka (もえか), Hagimoe (はぎもえ), Moenya (もえにゃ)
- Date of Birth: July 5, 2002
- Place of Birth: Saitama, Japan
- Blood Type: O
- Height: 156cm
- Bands / Groups:
AKB48 Song Participation
|NO WAY MAN||Saikyou Twintail|| U-16 Senbatsu 2018|
- Currently a member of AKB48 Kenkyuusei. She was a candidate for the 3rd AKB48 Group Draft and was drafted by Team K in the first round.
- Her older sister is Yahagi Yukina, a seventh generation member of SKE48.
- Her first choice as a draft member was AKB48.
- Originally auditioned for AKB48's 16th generation.
- She has a nice smile, is good at cooking, and has a good memory, but she can be insensitive.
- Her hobbies include cooking and listening to music.
- Her special talents are piano and singing.
- She admires Watanabe Miyuki.