Tsukiko Johima

Tsukiko Johjima is the last boss of Castle Shikigami III. She is the toughest boss, with four forms up to date (the fourth one being the hardest).

Her guardian is the Tsukigamizoku werewolf, Kagachi.

Shikigami no Shiro Nanayozuki Gensoukyoku
Like Yukari Horiguchi, Tsukiko appears in two games, however, her personality is much colder in this one.

Here, she is depicted as a childhood friend of Kohtaro Kuga. It is also revealed that she has been hospitalized for many years.

Castle of the Shikigami III
When fighting Kagachi as Kohtaro, Kagachi tells you that he is dissapointed in him for what he has done to Tsukiko, which is most likely a refferal to her first appearance.

Here, she posses as the final boss with four forms. Her first form consists of a human with long, violet hair. With her Katana (which is most likely her Shikigami), she attacks the player with a variety of special attacks.

When the human form is defeated, she will transform into a very mechnical being. Her giant appendages allow her to rappidly fire bullets at the player, making an un-ivadable attack.

When this form is destroyed, she will transition into yet another mechanical being, however, she is weaker in this state, and can't attack you as rapidly.

Abilities
Tsukiko can rapidly attack the player with a barrage of energy waves and bullets. Her attacks are all very difficult to evade, which is why it is suggested that the player has a large stock of coins..

When defeated, she can shape-shift into a mechanical form, however, she gets weaker after each transformation (the only exception being the final fetus-like form, with a barrage of many special attacks combined).

When fighting her in each of her forms, it is suggested that you use Roger Sasuke.