In the introduction arc, he was seen when Aki was talking to her other members. His actual cameo was on Chapter 7, where we was disturbed about the fact that Ko was late for a meeting that he planned. He is shown to dislike his members incompetence, but there was a small scene where he showed he feels calmer around Aki.
Training Arc
In the training arc, people believe he was doing well. However, he was seen knocking Ko out or having an arguement with him several times. He was calmed down by someone, when they said he was strong as he is and they knew him well. He also overssees Yarohe when they were neglecting their physical health to become stronger. He pointed out to them agressively, but it does show that he does care about them because he approached them out of concern.
First Mission Arc
He did not appear on the arc except the last part, where he is seen waiting outside for Aki to finish her meeting. At the end, they have a brief talk about the next mission they're joining, and they end up walking together before the arc ends.
