He is also known to be ℃-ute's chief manager from at least 2012 to 2014. Long before this, Hashimoto has been credited as a keyboardist and pianist for several Moritaka Chisato songs from early as 1993, and he was credited as a producer for the first time for Moritaka's 1996 and 1997 albums.
- HELLO! Mata Aou ne (3nin Matsuri version) (guitalele)
- Summer Reggae! Rainbow (arrangment, programming as hasie)
- HELLO! Mata Aou ne (7nin Matsuri version) (guitalele)
- HELLO! Mata Aou ne (10nin Matsuri version) (guitalele)
- Watashi mo "I LOVE YOU" (SAMBA DE CoCo Remix) (additional programming)
- Samba! Kobushi Janeiro (arrangement and programming as hasiejaneiro)
- Kobushi no Hana (additional programming)
- Zanshin (Organ)
- Te wo Tatakou 2 (acoustic piano)
- Mukashi no Hito wa... (electric piano)
- Let's Go! (keyboards, acoustic piano, electric piano)
- Bootsu to Shite Miyou (acoustic piano, taishogoto, guitar, keyboards)
- SWEET CANDY (electric piano)
- Mirai (acoustic piano, electric piano)
- SNOW AGAIN (keyboards, acoustic piano)
- Pappappaya (Fender Rhodes piano, clarinet, synthesizer)
- Denwa (acoustic piano)
- Kiken na Hodou (piano)
- Dokyuu no Go Sign (additional programming, chorus)
- Go Go Tokyo (programming)
- Wakattenai Janai (chorus)
- From 2014 to 2016, Hashimoto has participated as a judge for Hello Pro Kenshuusei's test events.
- ↑ "モーニング娘。'18、新たな音楽体験「音のVR」に興奮「誰もがセンターになれる」" (in Japanese). natalie. 2018-03-14.
- ↑ "ダンス☆マン×ヒャダインがこぶしファクトリーで語る「赤羽橋ファンク」と「ハロプロ文法」" (in Japanese). BARKS. 2016-02-18.
- ↑ HELLO! PROJECT COMPLETE SINGLE BOOK 20th Anniversary Edition. Ongaku Shuppansha. Published 2018-04-02.
- ↑ Translated by Henkka. "Hello! Project COMPLETE SINGLE BOOK 20th Anniversary Edition Roundtables: The Recording Directors." Wota in Translation. 2018-05-06.
- ↑ Nakajima Saki no Cute na Jikan. Radio Nippon. Broadcasted 2012-04-01.
- ↑ Nakajima Saki. "中 キュートな時間っ" (in Japanese). ℃-ute Official Blog. 2015-04-05.
- ↑ "アルバムＣＤ" (in Japanese). Moritaka Info.
- ↑ https://twitter.com/prse/status/748395542330347520
- ↑ "こぶしファクトリー「サンバ！こぶしジャネイロ／バッチ来い青春！／オラはにんきもの」（7/27発売）レビュー" (in Japanese). Rakuten Books. 2016-07-15.