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...
Maybe something happened 
with another teacher?
ربّما حدث شيء ما مع مدرّس آخر؟
Vielleicht ist etwas mit
einem Kollegen passiert.
Tal vez pasó algo con otro profesor.
Tal vez pasara algo con otro profesor.
Un conflit avec un collègue,
peut-être ?
Che sia capitato qualcosa
con un altro insegnante?
Será que aconteceu alguma
 coisa com outro professor?
Может, у него какие-то
учительские проблемы?