I think Aniki (Kyouichi) knows that Ken loves Kirara since they were little, but obviously Ken would never admit it. At chapter 2 page 26, when Kirara's at their house, the way Aniki and Ken look at each other, and then Ken wants to force Kirara to go away is very suspicious. (well... that's also because Ken is jealous AF and didn't want them hanging out xD) Also at chapter 8 page 9, Aniki tells Ken that he should give Kirara his number. We know Ken tries hard to look like he doesn't care about Kirara and wants to keep distance from him, so I'm sure that Aniki can see through it and that he likes him in secret.
I think Aniki (Kyouichi) knows that Ken loves Kirara since they were little, but obviously Ken would never admit it.
At chapter 2 page 26, when Kirara's at their house, the way Aniki and Ken look at each other, and then Ken wants to force Kirara to go away is very suspicious. (well... that's also because Ken is jealous AF and didn't want them hanging out xD)
Also at chapter 8 page 9, Aniki tells Ken that he should give Kirara his number. We know Ken tries hard to look like he doesn't care about Kirara and wants to keep distance from him, so I'm sure that Aniki can see through it and that he likes him in secret.