Amorous Snake first appears as a sub-boss on the 7th floor of Marukyu Striptease within the Midnight Channel. After navigating around the floor after Shadow Rise turns the lights off, the party will come across a curtain that gives a warning about entering. The Amorous Snake must be fought to continue the dungeon.
It will later appear as a normal shadow on the 1st through 3rd and 6th World of Magatsu Mandala. It will use Stagnant Air and Poison Mist to Poison the party and Life Leech when injured. After being defeated, it may drop a Scaly Lump. Selling 4 Scaly Lumps will unlock the Phalanx weapon for Kanji Tatsumi in the shop.
In Golden, Amorous Snake appears on Magatsu Mandala Worlds 1 through 3. It may also be summoned by Chaos Fuzz. Upon defeat it may drop Angelite for trade at Shiroku Pub.
Amorous Snake appears in Acts 1 through 3 of Hikari. It attacks with Physical skills, and may poison the party. When defeated, it may drop Snake Gem and Snake Pit Organ. Snake Gem is used to create the Neutron Saber for Akechi, the Omega Knuckle for Akihiko and Makoto, the Axion IG for Aigis, and the Mogari-Bue for Yukiko. Snake Pit Organ is used to create the Origin Naginata for the P3P heroine, and the Oni-Gawara for Kanji.