Groups
- hogege 13
- hokke 13
- hondadai 13
- horic works 13
- hormone shokudou 13
- hoshiame 13
- hurricane dotcom 13
- ichinichi atelier 13
- ijou higan sensen 13
- ika guerrilla 13
- innocent dickgirls 13
- inraku tonbo 13
- inym 13
- ishita 13
- itadaki 13
- itomaru no tsubo 13
- j9 kagekidan | j9 opera company 13
- jamadai oukoku 13
- janis toilet 13
- jewelry box 13
- jibaku mecha 13
- jumyou wa isshuukan. 13
- junkxjunk 13
- juubako seisakujo 13
- kachiwari jikkenshitsu 13
- kagero 13
- kai 13
- kai.tenchou 13
- kakuran operetta 13
- kanbotan 13
- kankyokusetsu 13
- kanshasai soft | onsen yuki soft 13
- kappaya 13
- katsuma gokurakudou 13
- kawanakashima kobo 13
- keiyou tsudanuma juku 13
- killstreak 13
- kimi wa rokudenashi 13
- kinzoku hannou 13
- kinzoku tanchiki 13
- kisachi 13
- kisaragi mutsuki 13
- kitsukedou 13
- kizuna project 13
- koharu koubou 13
- kokonji honpo 13
- kokumaren 13
- komoriya 13
- koppepan mo galileo mo 13
- kouen tanpaku q 13