Sakutaro Morishige

Sakutaro is a character with layers: he likes to leave a good impression on other people while hiding his inner personality. He acts stoic and collected, taking situations like his best friend's transfer and being encased in Heavenly Host Elementary School in his stride. Sakutaro takes great pride in his family heritage and reacts violently when other people make fun of his name.

Unlike the rest of the characters, he is neither disgusted nor horrified by the excessive gore and decaying corpses in Heavenly Host. Instead, he finds them intriguing and feels comfort in viewing them, which may be a sign of schadenfreude. However, he tries to keep this trait a secret from others. Despite this, he did openly show amusement in chasing Yuka Mochida around, later recalling how much he enjoyed it, though he never intended to actually hurt her, out of his friendship with Satoshi.

In Corpse Party: Book of Shadows, it is shown just how potentially twisted Sakutaro can become, displaying levels of sadism that rivals that of Yuuya Kizami. Rather than feeling mere comfort, Sakutaro now experiences disturbing amounts of pleasure at the sight of corpses, often donning an eerie grin whilst doing so, something, as noted by Nari Amatoya, he seems to do unconsciously. In addition, instead of finding corpses merely interesting, Sakutaro praises and critiques them as if they were works of fine art. This is most apparent with his treatment of Mayu's corpse, showing a sick kind of reverence for it, and finding himself constantly drawn to it. It appears he also develops a kind of possessiveness towards the bodies he takes pictures of, often calling them "his". Multiple times throughout the chapter, Sakutaro seems to catch himself, and acknowledge his behaviour as wrong, yet he always lulls back into his sinister antics soon. This dark side of him can reach its absolute peak as seen in one of the wrong endings, where he willingly and eagerly takes part in torturing and killing Emi Urabe with Sachiko Shinozaki, who seems to have taken to Sakutaro quite a bit.

However, in Corpse Party: Blood Drive, after nearly dying by falling out the window, Sakutaro seems to have snapped out of his corpse obsession, admitting that he was violating the bodies of those who had died, and seemingly regretting his actions. However, in its place is now an odd type of madness, shown when, upon finding Mayu's corpse again, puts in it a plastic bag and walks around with it, treating it as if she were still alive, something he quickly begins to believe, even performing a romantic soliloquy for her, something that even the likes of Yuuya find odd.

[https://corpseparty.fandom.com/wiki/Sakutaro_Morishige]