Tokisada (時貞), also known as Amakusa Shirō (天草四郎), fully known as Amakusa Shiro Tokisada, his baptismal name was "Geronimo," though it became "Francisco" during the time of the rebellion, was the teenage leader of the Shimabara Rebellion, though it is said that the mastermind of the rebellion was someone else and that Shiro was set up as the leader. He lived a mere 16 years.
After successfully defeating the Shogunate army several times, the rebels were finally besieged as Shiro led the defense of Hara Castle and died when it fell. Executed in the aftermath of the fall, his head was displayed on a pike in Nagasaki for a very long time afterward as a warning to any other potential Christian rebels. His death poem was: "Ima roujou shiteiru mono wa, raise made tomo to naru." ("Now, those who accompany me in being besieged in this castle, will be my friends unto the next world.") According to some sources, Shiro may have been the illegitimate son of Toyotomi Hideyori, the son of the general who first united all of Japan.
Tokisada appears as a boss when a player gives an Ultimate Summon Orb to the White-Haired Young Man NPC in front of the entrance to the B108F boss room. This boss room can be found in Old Ichigaya Camp's basement floors. By clearing his boss room players have a chance to acquire his iconic ghostly followers.
He also appears as one of the neutral alignment bosses in the Invoke System. Thus, when the neutral alignment has collected the most emblems from demons, he will appear on Nakano field once every hour from the last time he was defeated. When beaten, he has a rare chance of dropping his plug-in item.
"Fully known as Amakusa Shiro Tokisada, his baptismal name was "Geronimo", though it became "Francisco" during the time of the rebellion. He was the leader of the Kan-ei 14 (1637) rebellion of Shimabara, though it is said that the mastermind of the rebellion was someone else and that Shiro was set up as the leader. After successfully defeating the Shogunate army several times, the rebels were finally besieged at Hara Castle and killed. His head was put on public display. He lived a mere 16 years."
—Shin Megami Tensei IV compendium
Tokisada appears as a foe in the Challenge QuestFour Wings, Four Heads as Flynn seeks four heads (an eagle head, an ox one, a lion one and a human one) to summon Seraph. Found in the Shiba area of Roppongi, he wonders what is going on as Flynn attacks him. As he is defeated, he realizes he will once again be sacrificed to God, dying afterwards. His head is then taken by the Messenger Angel to be used in the ritual.
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