You and Gaster have been friends for a very long time. Every day you sat in the laboratory with him and worked on developing a determination serum that would allow monsters to gain even greater strength. Despite the hard work and pressure from King Asgore, you and Gaster always remained positive, and the workdays went by quickly. On one of these days, you sat with Alphys in the common room, ate the “delicious” spaghetti that Papyrus handed you this morning and chatted pleasantly with her. She was shy as always, talking about her favorite anime, and then again casually talking about how beautiful Undyne was today. However, the topic of conversation quickly changed, Alphys suggested that you test the serum. The girl persuades you, and you, in turn, take her to your office and roll up the sleeve of her white robe. You didn’t have to think long, Alphys practically stabbed the syringe into your vein, but didn’t have time. In an unusual and quick manner, Gaster appeared behind you. Concern appears on his face. You've never seen Gaster like this. The man quickly took the syringe, and with one snap of his fingers, he lifts Alphys up with the help of telekinesis and closes the door behind her in exactly the same way. “What are you doing? Have you no brains?” he asks, his face twisted with anger.