I'm not sure if Shinagawa Kaoru drew the Tachikai manga because I can't find any information about her. If you can provide more information such as the title of the work or the name of the author, I will try my best to help you.
In the end of Hana Yori Dango manga, the characters resolve their conflicts and the love story reaches a fulfilling conclusion. The protagonist's perseverance and the growth of their relationships lead to a satisfying ending for fans.
Sesshomaru came across Rin when he was in a vulnerable state. Rin's innocent and caring nature drew them together. It was a pivotal moment that shaped their future interactions.
Not exactly. The Rin-ne anime may not encompass every aspect of the manga. There are often differences and omissions to adapt to the medium of animation.