Last Vol 2 Ch 9 What we know: Onoda is a classmate and friend to Katayama and Mikami. A past lover to Mikami. And a lingering ghost. Kazuma is the half brother who looks so much like Onoda, making things much more tense. Mori is in Love with Mikami. Hayasaka is falling for Katayama. Katayama and Mikami have complicated feelings that at this time I cannot separate from what is because of Onoda and what are genuine feelings of their person. Also apparently Katayama and Hayasaka have kissed but it is not within the scans provided. (Vol 2 Ch 9)
Good. Enjoyable characters. Nice art. More complex background plot than it seems. Cons: the pacing is a little off? So the plot lines pause to explore other plots rather than together? Make sure to read the short sequel which wraps up the second ship.