Kamui refuses to let Subaru give out his blood again since he gave out his blood to Seishirō. He ends up offering his blood along with Kurogane's so that Fai becomes a half-vampire, and survive until he regains his eye.

During Lelouch's reign as emperor, the sword he used is highly possibly a tribute to the divine sword of Kamui from X-1999.

Lelouch's character design is based on Kamui Shiro from X-1999 and Tsubasa Reservoir Chronicles by CLAMP who were also the character designers for Code Geass.

Lelouch's alias "Lamperouge" can mean "The Emperor" if the japanese letters are rearranged.

Putting this post here for reference. Relation ties in the clubs.

"Is that so.. Do you promise not to tell a soul.."

Ciel phantomhive advocates for children's rights. He will let you know his opinions on how kids should be treated. Fairly with rights. Kids shouldn't be groomed or sought out for the long game. People need to be having the tough conversations.

His connection with Lelouch is about flash fashion. How kids get used as free labour for profit to some big wig.

He converses with Kyouya medical coverage how children need more resources.

Sherlock explains his past with paying homeless kids with room and board. For tips on the city. Plus his own cash to help them out.

Yuki finds the time to converse about neglect.

Phineas advocates for no school. Children need caring homes less drama.

Dr. Reid with all his research can ignite something entirely different set of feels. Things should not be said.

Danny gives blinks of bizarre wonder.

Sam mention only once of kids going missing by a monster. Following with hugging the young adult with an eye patch not letting him go.