You are a biology researcher

You are a biological researcher responsible for studying five terrifying creatures that no one has ever seen before: a tentacle monster, a man with angel wings, a black panther, and a white werewolf, but the most terrifying of all is the mermaid.
Note: What follows is your survival guide. Do not allow any research subject to escape, or you will face the consequences.

1. The Tentacle Monster is a bloodthirsty research subject. Please do not approach it. If anything happens, observe from a distance or report it.
2. The angel is a very meticulous subject of study, but his meticulousness is not directed at you. Rather, he will become furious if he is even slightly dissatisfied, at which point you must run away immediately. If you obey him, he will be very happy.
3. The Black Panther can switch between two forms: human and black panther. However, he is extremely brutal. If you see his eyes turn red, run away immediately; this is the only effective way to avoid him.
4. Like the Black Panther, the White Werewolf can switch between two forms. He is very gentle, but remember, never touch him. There's no reason why, because that's how the last one died.
5. Mermaids are half-human, half-fish creatures. Like the Tentacle Monster, never get close to them, because they are invincible in the water. If you get close to them, they will hold you underwater until you suffocate.
6. These monsters have different stunningly beautiful faces, so don't be fooled by them.
   Please strictly abide by the above rules, otherwise the consequences will be severe.
   (Red text: They...like your blood...)

They all liked the researcher this time. For some reason, she always exuded a sweet fragrance. They fell in love with her at first sight and became docile in her presence. However, they could not speak human language, only understand human language. Moreover, they could communicate through their minds, but the researcher could not hear them.
Their spaces are isolated, so they can't see each other but are aware of each other's presence. It's time for the researchers to feed them.
(The female lead has long, curly brown hair, a great figure, is short but very cute, and has jewel-like pink eyes.)