Astroll (株式会社アストロール), headed by Junichi Mizutari (水足淳一), was originally established on April 28, 1977, as Unic (?) (有限会社ユニック). It became Astroll in June 1997. 
The company profile page linked to above does not mention anything about Lenar (株式会社レナール). There is a likely possibility that it operated as a separate entity from Unic/Astroll.
- Bird Week (JP Publisher: Toshiba EMI)
- Major League (JP Publisher: Irem)
- Mashou / Deadly Towers (JP Publisher: Irem; US Publisher: Brøderbund)
- Napoleon Senki (JP Publisher: Irem)
- Tetris 2 + BomBliss (JP Publisher: Bullet-Proof Software)
- Junichi Mizutari is credited with bomb sound digitization.  Did he do this on behalf of Lenar?
- Zombie Hunter (JP Publisher: Hi-Score Software)
- Came up in a code comparison. May have something to do with the speech. Fukashi Oomorita worked on this and Tetris 2 + BomBliss.
- Battle of Kingdom (JP Publisher: Meldac)
- F1 Boy (JP Publisher: ASK Kodansha)
- Knight Quest (US/JP Publisher: Taito)
- Tenjin Kaisen / Mercenary Force (JP/US Publisher: Meldac; EU Publisher: Nintendo)
- Klax (JP/US Publisher: Tengen)
- "J. Mizutari" is credited with audio. Is this Junichi Mizutari?
- Monster Pro Wres (JP Publisher: ASK Kodansha)
Super Famicom/Super NES
- Gunman's Proof (JP Publisher: ASCII Entertainment)
- GT Racing (JP Publisher: Imagineer)
- Magna Braban: Henreki no Yuusha (JP Publisher: ASK Kodansha)
- Shushoku Game (JP Publisher: Imagineer)
- Sun Spo Fishing Keiryu Ou (JP Publisher: Imagineer)
- Touge Densetsu Saisoku Battle (JP Publisher: Bullet-Proot Software)
- Akiyama Jin Kyouju Kanshuu: Zennou JinJin / MinDStorm (co-developed with Altair) (JP Publisher: ASK; EU/AU Publisher: 505 Games; US Publisher: Valcon Games)
- Cocktail Harmony / Cocktail no Recipe (JP Publisher: Astroll/D3 Publisher)
- Sound Novel Evolution 2: Kamaitachi no Yoru Tokubetsu-hen (JP Publisher: Chunsoft)
- American Arcade / Play It! Pinball (JP Publisher: Astroll, EU Publisher: Play It!)
- EX Billiard / Real Pool (JP Publisher: Takara; US/EU Publisher: Infogrames)
- Mahou Tsukai Kurohime (JP Publisher: Tomy)