The Hysteric Conservative Boy Happens to Be Somewhat Cute.

Hysteric na Kurokami Megane-kun wa Igai to Kawaii
ヒステリックな黒髪メガネくんは意外とかわいい

Source

We're Childhood Friends but I Like Him in That Way.
Osananajimi dakedo Seiteki ni Suki desu.· 幼馴染だけど性的に好きです。
manga

Souta and Mitsuki, childhood friends who've been very good friends since kindergarten, are now in their adolescent years. One day, Mitsuki comes to complain to Souta after hearing their classmate boast about losing his virginity. Reasoning that there's nobody else he can ask, Mitsuki suggests practice-kissing with Souta! Souta acts indifferently but internally yells an eager response. Why? Well, because he's been keeping his role as Mitsuki's best-friend, while secretly having feelings for him all this time! Unaware of those feelings, Mitsuki shares a clumsy kiss with Souta. Souta thinks it's his chance and takes on a gamble to fulfill his desire...!! An outwardly calm but internally screaming boy x A pure-hearted idiot boy. A fast-paced love-confusion between two childhood friends! (Source: Takeshobo, translated) 1. **Osananajimi dakedo Seiteki ni Suki desu.** (幼馴染だけど性的に好きです。, We’re Childhood Friends but I Like Him in That Way.) 1 2. **Osananajimi dakedo Seiteki ni Suki desu.** (幼馴染だけど性的に好きです。, We’re Childhood Friends but I Like Him in That Way.) 2 3. **Osananajimi dakedo Seiteki ni Suki desu.** (幼馴染だけど性的に好きです。, We’re Childhood Friends but I Like Him in That Way.) 3 4. **Osananajimi dakedo Seiteki ni Suki desu.** (幼馴染だけど性的に好きです。, We’re Childhood Friends but I Like Him in That Way.) 4 5. **Ani ga Suki da ga Brocon wa Nai** (兄が好きだがブラコンではない, I Like My Older Brother but I’m Not Obsessed) 6. **Otouto wo Aishite Iru ga Brocon de wa Nai** (弟を愛しているがブラコンではない, I Love My Younger Brother but I’m Not Obsessed) 7. **Yoshida Kyoudai wa Brocon wa Nai** (吉田兄弟はブラコンではない, The Yoshida Brothers Aren't Obsessed) *Note: Includes an extra chapter.*

Spin-off

Brothers-in-Law Are in Love and They Want to Date Openly
Giri no Kyoudai dakedo Koibito no Futari wa Doudou to Tsukiaitai· 義理の兄弟だけど恋人のふたりは堂々と付き合いたい
manga

Kazuma and Yuuya are stepbrothers who are actually lovers and live under one roof (in their parents' house), secretly doing the things lovers do under their parents' radar. A particular close call is intercepted by Kazuma's quick-thinking. While Yuuya is determined to keep their relationship under wraps, he also begins to feel anxious and conflicted for how long they can keep it a secret. On the other hand, Kazuma meets Yuuya's student, Matsubara, from his part-time as a cram school tutor by chance when they're out shopping. Seeing their closeness, Kazuma's instincts tells him that he should keep an eye out for him. He is also curious how Yuuya is doing at the cram school, with Yuuya having a charm that attracts those younger than him... (Source: Takeshobo, translated) *Note: Includes one extra chapter.*