From my understanding, Minoru wasn't able to separate 'brother' from 'Yutaka' through most of the volume. 'Yutaka' being just a person, not his brother. Example: when he was kissing Yutaka by feeding him a candy apple, he wasn't thinking of him as a brother and felt wrong (as explained when he was talking to the sensei drunk). He kept thinking of just 'Yutaka' and then thinking "no, Yutaka is also 'brother'". Whereas Yutaka was fine with Minoru as both a 'brother' and as 'Minoru'. Yutaka and Minoru talking at the beach subtly about their feelings made Minoru realize he could think of Yutaka as 'both' too and be okay with having feelings for him (bc Minoru was sad at the possibility of losing Yutaka as both), which lead to Minoru being okay with them living together from now on as 'brothers' which now incorporates romantic feelings. Basically, Minoru came to terms with being in love with Yutaka and recognizing they could also be brothers. Just my interpretation though. ヾ(❀╹◡╹)ﾉ~ Hope this makes sense!
From my understanding, Minoru wasn't able to separate 'brother' from 'Yutaka' through most of the volume. 'Yutaka' being just a person, not his brother. Example: when he was kissing Yutaka by feeding him a candy apple, he wasn't thinking of him as a brother and felt wrong (as explained when he was talking to the sensei drunk). He kept thinking of just 'Yutaka' and then thinking "no, Yutaka is also 'brother'". Whereas Yutaka was fine with Minoru as both a 'brother' and as 'Minoru'. Yutaka and Minoru talking at the beach subtly about their feelings made Minoru realize he could think of Yutaka as 'both' too and be okay with having feelings for him (bc Minoru was sad at the possibility of losing Yutaka as both), which lead to Minoru being okay with them living together from now on as 'brothers' which now incorporates romantic feelings. Basically, Minoru came to terms with being in love with Yutaka and recognizing they could also be brothers. Just my interpretation though. ヾ(❀╹◡╹)ﾉ~ Hope this makes sense!