“There are many books in this world I do not know. It makes me angry.” Ik-Soo suddenly announces he will travel with Yona and Hak to see the world. Yoon is upset and unable to contain his anger. Though Yona and Hak understand his feelings, they are unable to do anything but watch in silence.
had to thank you for applying 
medicine to my head.
أردت أن أشكرك على استخدام الدواء على رأسي
Ich wollte dir danken, weil du
meine Wunde behandelt hast.
Tenía que agradecerte por la medicina.
Tenía que agradecerte la medicina.
te remercier pour l’onguent.
dovevo ringraziarti per la medicina.
...tive de agradecer pelo seu remédio.