Fukigen na Majo to Uchiki na Kedamono
不機嫌な魔女と内気なケダモノ
A student develops feelings for his eccentric, self-centered, and scientifically inclined senior, who takes him on as her assistant. After she makes him test an experimental potion, he undergoes a sudden transformation. This change may give him the confidence needed to express his feelings toward his senior.