Masaki is a really interesting, complex, tragic character. His actions have a through line, even as unconscionable as they are, he feels roundedly motivated. Kunihiro is unflappable and adorable honestly, dense fucker (affectionate), watching him grow into himself, despite the Problematicisms, it's a fun time
alrd included in Koisuru Boukun: vol 9 ch6.2 extra, related series: -- 1. Challengers (Koisuru Boukun adapted form) -- 2. Koisuru Boukun (spinoff to Challengers, main story where Knockin on Your Door is based) -- 3. Knockin on Your Door (side story to Koisuru Boukun) a sequel to 'Bokutachi no Shippai' or 'It is our Failures' story of kunihiro (morinagas big brother) & masaki included in the main series