Freuen is a verb. There is no case, only the corresponding verb. Displacement verbs do not distinguish between yin and yang.
What does Zu mean?
The Zu here is an infinitive with zu.
What grid is sehen? Anode or cathode?
Sehen is also a case-free and yin-yang neutral verb.
Do "Ich" and "mich" both mean "I"? If so, why use two "I's" in one sentence?
There must be two reflexive verbs. I can check the usage of reflexive verbs in detail.
You can also say: I'm glad to meet you, Dad? I saw it!
Cann't gefallen be the subject and lead the third case, esgefaeltmir, ...
Dass conjunctions connect clauses
Ich is a personal pronoun, not a noun.