Geez, I'm actually pretty scared about doing this.

Hello SGers! This is my very first time making a thread and a puzzle here, and its obvious the only theme I can provide in my first puzzle is...

WEEB WAIFU/HUSBANDO CHART!!

This puzzle is very simple, all you gotta do is insert the names of the characters contained in my Waifu Chart™ of the image below in their ITH page. That's your cue to take a look at it before continuing to read, okay?

...

Alright! Now you must be looking weird at me but its alright, I can get used it~. Okay, so listen up. All those characters are sorted out by tiers (that's bad and you should not do that), and each tier has its own ITH puzzle with some giveaways waiting for you after you solve them. Each tier will have two giveaways, and they are listed in the table below.

Accepted answer formats:

• Name Surname
• Surname Name
• Name S.
• Surname N.
  and in some cases, the characters won't have surnames and it'll be properly noted.

Some time after your first guess, ITH will give hints. The time is random between each tier because I messed up while making the puzzles~.

Its your turn now, so, get your google skills ready!

Tier D
Tier C
Tier B
Tier A
Tier S

View attached image.