URLs

• https://twitter.com/tsunagami_
• https://twitter.com/intent/user?user_id=1045077080
• http://www.doujinshi.org/browse/author/35325/Mitsunaga-Yasunori/
• https://www.mangaupdates.com/authors.html?id=1565
• https://ja.wikipedia.org/wiki/光永康則
• https://www.animenewsnetwork.com/encyclopedia/people.php?id=61214
• http://shonen-sirius.com/series/sirius/kaibutsuoujo-nightmare/