Tetsuo has offered to work with the girls to figure out how Hikari and Yuki, who don't handle heat or sunlight well, can spend summer in comfort. But the school's head teacher suggests that the demi girls' total reliance on Tetsuo might actually be hurting them in the long run. This weighs on Tetsuo's mind...
understands them very well, 
including those parts of them.
.يدرك ذلك تمامًا، بما فيها تلك الجوانب منهنّ
entende bem delas, incluindo suas diferenças,
наверняка хорошо
понимает и то, что они отличаются.