History DanganronpaTriggerHappyHavoc / TropesLToR

** Most of the mysteries brought up in the final trial are addressed in later installments, but it's never explained anywhere why the twin sisters Junko Enoshima and Mukuro Ikusaba have different surnames. When asked about it, Junko says she's tired of always getting asked that question and that the students should think of a reason themselves, and anyway the real answer is pretty boring.

* NeverTrustATitle: Or a sub-title, in this case; "Trigger Happy Havoc" isn't technically wrong, but leaves out that you're shooting down ''arguments''
by firing ''figurative'' "bullets" of facts and logic, and no actual firearms are ever used. It also makes the game sound like a light-hearted shooter, when it's actually a dark, psychological VisualNovel.

by firing figurative "bullets" of facts and logic, and no actual firearms are ever used. It also makes the game sound like a light-hearted shooter, when it's actually a dark, psychological VisualNovel.

by firing ''figurative'' "bullets" of facts and logic, and no actual firearms are ever used. It also makes the game sound like a light-hearted shooter, when it's actually a dark, psychological VisualNovel.

* LeftHanging: What the Tragedy was, what Junko's Ultimate Despair group is, how the students lost their memories, why Junko and Mukuro have different last names, and what actually happened to the survivors after leaving the school in the epilogue is left unexplained. Most of this has been answered in later installments, however.

* LockedRoomMystery: Chapter 4. The victim was found in a room barred from the inside, that Makoto had to break down to open. Kyoko even explicitly calls it out as one of these and describes four main types of locked rooms: the door was locked from the outside after the victim was killed, the victim was killed via some sort of trap or device from outside the room, the killer hides in the room and leaves after the door is unlocked, and the room only ''looks'' locked and had a secret exit that the killer used. It eventually turns out that it's none of these. Instead, it's what our analysis page calls a Type 4; SuicideNotMurder. Sakura killed herself and used the locked room to make sure nobody else could be blamed for her murder.

* MadeOfIndestructium: According to Monokuma, the e-Handbooks can withstand 10 tonnes of pressure and are waterproof up to 100 meters deep (with heat being their only weakness). The anime made them look like typically-delicate modern smartphones too.

* NoMercyForMurderers: Case 2 has [[spoiler:Mondo]] regretting killing [[spoiler:Chihiro]] due to his envy, but was executed due to the rules.

** The nature of most students' dark secrets. Makoto has his revealed to the player immediately as he's the protagonist and Chihiro, Mondo, and Toko have theirs come up in the trial, but Monokuma keeps his word of not revealing the others after there was a murder.