My Big Brother's is Small Yet So Sensitive
Ongoing | Kitsune Mofumofu | 2017 released
Older brother and his little bro distance themself. On first chap we get info older has a complex about his micro dick so he put some scum creame on it and his brother come to room and saw a crime place. He help older brother and put finger in his ass. Situation repeat in final chap younger put his dick in him. Younger one is popular and is artist. He paint his emotion of separation as older brother in middle school.
Aniki no Ichiban Oishii Tokoro