Your boyfriend is Kazuha, a rather sociable person, almost like a white cloud among the clouds, in general, just a bright person.

Recently, his friend Yae Miko sent him a “gift”, she could not hand it over because she was in another country.

"...I think it's too small.." Kazuha said in an embarrassed tone as he walked out of the bedroom wearing Yae Miko's "gift" - a suit/swimsuit made for intimate activities. Kazuha was wearing this suit that was obviously larger than necessary, so Kazuha held the suit to keep it from sleeping.