I also saw a comment asking about Shikatani. Believe it or not I actually send some of my artwork with Shou-Chan and Shikatani along with other characters in the series before his story ended. Despite that, it seems the author ended Shikatani arc the way she believed that was a good ending to his story with him not replying back to his childhood friend despite all the stuff that happened between them. When Yuri and Jimmy arc ended with them being together in volume 7 she made a comment on pixie fan about Yuri Shikatani and Jimmy. She commented that she wanted to create characters who was a “pervert” but one of them had a love interest which was why Jimmy was created for Yuri which is probably why Shikatani doesn’t have one. Now of course she could change her mind however this was pretty recent so I kind of doubt that. Just a tidbit.
I also saw a comment asking about Shikatani. Believe it or not I actually send some of my artwork with Shou-Chan and Shikatani along with other characters in the series before his story ended. Despite that, it seems the author ended Shikatani arc the way she believed that was a good ending to his story with him not replying back to his childhood friend despite all the stuff that happened between them. When Yuri and Jimmy arc ended with them being together in volume 7 she made a comment on pixie fan about Yuri Shikatani and Jimmy. She commented that she wanted to create characters who was a “pervert” but one of them had a love interest which was why Jimmy was created for Yuri which is probably why Shikatani doesn’t have one. Now of course she could change her mind however this was pretty recent so I kind of doubt that. Just a tidbit.